Algae on DHG, Tank Walls - Setup Advice? - The Planted Tank Forum
 1Likes
  • 1 Post By ande3480
 
LinkBack Thread Tools Display Modes
post #1 of 9 (permalink) Old 06-26-2020, 04:36 PM Thread Starter
Algae Grower
 
PTrader: (0/0%)
Join Date: Jun 2020
Location: Rochester NY
Posts: 5
Algae on DHG, Tank Walls - Setup Advice?

I’ve got a really nasty case of brownish algae attacking my DHG and green algae slime on my glass. I took photos after a water change and some trimming so the tank is looking better than average. With the DHG it seems to start at the ends of the blades and work it’s way down to the base. It seems to be killing individual blades of grass. I can remove it with my fingers and some trimming but sometimes entire blades will fall off while doing this. Removing it seems to work temporarily but it comes back quickly sometimes even in a day or two. Also getting frequently pelted with green slime on the glass and lava rocks every couple days.

A little background: My gf got a small betta bowl last winter that has slowly evolved into a high-ish tech planted tank. I got a rimless 17gallon for her for Christmas and over time we’ve added a second light, pressurized Co2, dosing and upgraded from a HOB to an Eheim canister.

My hunch is that either the lighting isn't intense enough down at the substrate (which would be unfortunate since I just bought a second Satellite Planted Plus) or somehow changing my filter reset the nitrogen cycle. Each light puts out 36 PAR at 12" and I have them as close together as possible shining right down on the front of the tank where the bulk of the DHG is. I would think where the light cones are overlapping the grass is getting at least 60 PAR but that could be wrong, I'm having difficulty researching how overlapping light affects PAR. I kept my HOB filter running for a week while the new Eheim ran to get the media cycled but the HOB actually started leaking so I took it off sooner than I planned on. I also discovered a kink in my Eheim's hoses which was significantly reducing flow - maybe killing the beneficial bacteria? Fixed that as soon as I found it.

Water parameters:

• Ph - floating between 6.5–7
• Ammonia - 0
• Nitrite - 0
• Nitrate - 5–10ppm
• Kh -5–7

Tank Setup (pics attached):

• 17 gallon Landen rimless tank
• 2x Current USA Satellite Planted Plus LED
• 5lb Co2 with regulator + solenoid
• Eheim 2217 filled with Seachem Matrix and polyfil
• Substrate: mixture of ADA Amazonia and Fluval Stratum

Maintenance, Dosage, Etc:

• 1-2x weekly 50% water changes
• Daily dose of Seachem Flourish Excel 2-3 ml
• 3x weekly dose of NA Thrive
• Co2 comes on at 9 am and turns off at 6pm (1.5-2 bubbles/second)
• Lights come on at 11am and turns off at 6pm (no dimming)
• Trimming and picking off dead bits of grass and algae daily and scrubbing glass
• I'm feeding the fish very carefully, little pinches of fry and bug bites and make sure all is eaten before feeding more.

Flora:

• Struggling carpet of DHG
• 3x anubias nana petite
• Few stems of Bacopa caroliniana (not in love with this, thinking of removing it)
• I'll be adding more anubias nana and some java ferns next week

Fauna:

• 1x female betta
• 6x neon tetra
• 2x green tetra
• 1x zebra danio
• 10x amano shrimp
Attached Thumbnails
Click image for larger version

Name:	8E9C30FF-2E39-46B2-8960-6066AA33A0DB_1593189306890.jpg
Views:	28
Size:	168.5 KB
ID:	900269  

Click image for larger version

Name:	AF8FAF7C-FDFD-42D5-9849-EAD300C84415_1593189367476.jpeg
Views:	69
Size:	729.5 KB
ID:	900273  

Click image for larger version

Name:	DHG algae.jpg
Views:	22
Size:	307.1 KB
ID:	900275  


Last edited by ande3480; 06-30-2020 at 03:07 AM. Reason: moving photos, formatting
ande3480 is offline  
Sponsored Links
Advertisement
 
post #2 of 9 (permalink) Old 06-29-2020, 11:40 PM
Algae Grower
 
Marc Gallagher's Avatar
 
PTrader: (0/0%)
Join Date: Jul 2016
Location: Near Rochester NY
Posts: 21
Drop checkers looking a bit blue. Personally, I'd move the diffuser to the other side, might help it get distributed and dissolved better. I would also start the CO2 an hour before lights up and off an hour before lights out. Do you need flourish and thrive? If you're dosing full EI with the thrive then I'd probably stop the flourish. I don't have any experience with those lights and can't speak on the overlap so no input there. I used to struggle with bba, the only way I was able to defeat it was dialing in the CO2 in combination with solid lighting and excellent maintenance (especially vacuuming the substrate thoroughly). Also, I don't remember if the period goes on the outside or inside of the parentheses.
Marc Gallagher is offline  
post #3 of 9 (permalink) Old 06-30-2020, 03:06 AM Thread Starter
Algae Grower
 
PTrader: (0/0%)
Join Date: Jun 2020
Location: Rochester NY
Posts: 5
Thanks for getting back to me Marc. I did have the diffuser on the other side before but the Co2 flow seems to be better in this corner where it's already getting pushed up and into the current. When it was behind the lily pipe it seemed to get stuck in a dead zone between the outflow and the intake. The flow is pretty strong from the Eheim 2217 (it's rate for much bigger tanks than my 17 gallon). I think the drop checker is blue because in the photo because I took these hastily right after a water change -- it's always green during the day by the time the lights kick on. Re: the Flourish I meant Flourish Excel liquid carbon not the ferts -- will fix the original post. I've been vacuuming and picking out dead plant matter from the substrate like a mad man so I don't think that's it, but I will adjust my Co2 timer.

Any recs on a new lighting setup? Or any knowledge on PAR requirements to get a Dwarf Hair Grass to carpet nicely? Maybe I'll see if I can borrow a meter somewhere to see if I need a new lighting setup. Thanks again.
ande3480 is offline  
 
post #4 of 9 (permalink) Old 06-30-2020, 03:28 AM
Algae Grower
 
Marc Gallagher's Avatar
 
PTrader: (0/0%)
Join Date: Jul 2016
Location: Near Rochester NY
Posts: 21
I'm not the best at diagnosing tank imbalances admittedly, hopefully a more experienced person can chime in at some point. As far as part meters go, I think ABC aquarium in Fairport rents them but I'm not 100 percent sure on that. Has the hairgrass been sreading at all or just been kinda stunted?
Marc Gallagher is offline  
post #5 of 9 (permalink) Old 06-30-2020, 08:27 PM Thread Starter
Algae Grower
 
PTrader: (0/0%)
Join Date: Jun 2020
Location: Rochester NY
Posts: 5
Oh nice, didn't realize you were in Rochester. I'll look into ABC, definitely want to get a PAR reading at the substrate level. The grass is actually putting out runners and started to spread, the grass itself just doesn't look as healthy as what I've seen on here, maybe I just need to give it time.
ande3480 is offline  
post #6 of 9 (permalink) Old 07-10-2020, 01:35 PM
Algae Grower
 
vanostav61's Avatar
 
PTrader: (0/0%)
Join Date: May 2020
Posts: 65
You said you do 1-2x a week water changes but you didn't mention if you use RO or tap water.

Are you dosing Micros? Specifically anything that adds Iron?

Do you know your Calcium and Magnesium levels? If you use tap water you can get a tap water report from your municipal water supplier.
vanostav61 is offline  
post #7 of 9 (permalink) Old 07-12-2020, 03:18 PM Thread Starter
Algae Grower
 
PTrader: (0/0%)
Join Date: Jun 2020
Location: Rochester NY
Posts: 5
Quote:
Originally Posted by vanostav61 View Post
You said you do 1-2x a week water changes but you didn't mention if you use RO or tap water.

Are you dosing Micros? Specifically anything that adds Iron?

Do you know your Calcium and Magnesium levels? If you use tap water you can get a tap water report from your municipal water supplier.
I'm using tap water for water changes. I see a lot of people using RO water, is this worth doing? Haven't looked into it closely but would love to prevent the limescale buildup on my tanks.

I'm using NA Thrive which is both micro and macro nutrients. I also have Fluval Stratum and Amazonia substrate and Flourish Tabs placed near each patch of DHG. I would think there are plenty of nutrients in the soil for the plants.

I just looked at my water report, the latest I could find was from 2018 so assuming these minerals don't change much year-to-year my tap's Calcium levels are ~30-35 mg/L and Magnesium levels are ~6-9 mg/L. Hope I'm reading these reports correctly ha!
ande3480 is offline  
post #8 of 9 (permalink) Old 07-12-2020, 05:58 PM
Algae Grower
 
PTrader: (0/0%)
Join Date: Jun 2019
Location: Canada
Posts: 80
Hi @ande3480,

If your photo was taken mid-way through the photoperiod, then it will be a CO2 issue. You are able to reduce your demand for CO2 by limiting other nutrients; since you are dosing EI, you are making it so that the only limiting nutrient (in theory) is CO2 - the hardest to dissolve and distribute.

The drop checker has a 2 hour ish delay; if you come and check it every 30 minutes after CO2 turns on, you will see it change color throughout the day.

Aim for it to turn lime greenish ~30 ppm of CO2 about 2 hours after lights on, then watch your tank. I wouldn't worry about lights on color as the rate that it changes color is based on your injection rate which is based on your surface agitation - that differs by each tank.

The other edge of the CO2 sword is the flow/distribution of the bubbles/dissolved CO2. So watch your bubbles. If your diffuser has bubbles going straight up to the top and none are being moved around the tank, then you need to work on your placement. Do not stress if some get to the top - we can go crazy trying to manipulate gases. The other option is to place your diffuser in your filter intake and have the filter itself eat the bubbles and distribute in the path of your lilly pipe.

Once it looks "like bubbles are moving around the tank" (or you have most of the bubbles going into your intake" and you have the DC lime greenish by 2 hours after lights on, you are good. If your DC is hitting Lime green, just not at lights on, then turn your CO2 on earlier to hit that lime color by lights on.

Oh yes, once you get CO2 set and while you are setting it, you need to clean - clean intensely - rub the leaves, remove the gunk, let those dead leaves float to the top and skim them away - all you want left is healthy leaves (I mean leave the healthiest ... if they are all unhealthy, then you need to keep some)!

Ultimately, watch new growth - if new growth is algae free, then you are on the right track.

Cheers,
Josh
Tuister is offline  
post #9 of 9 (permalink) Old 07-15-2020, 02:56 PM Thread Starter
Algae Grower
 
PTrader: (0/0%)
Join Date: Jun 2020
Location: Rochester NY
Posts: 5
Hey @Tuister really appreciate your in depth reply.

The photo was taken right after a water change when the Co2 was off so that's why the drop checker is blue. It's usually lime green at it's current placement but I bet you're right about Co2 distribution. I have an inline diffuser coming tomorrow so I hope that helps get a much more evenly dissolved distribution of Co2.

Also got the PAR meter readings through a rental. The front of the tank is getting about 75-100 PAR (higher towards the middle obviously) so I think this lighting should be strong enough for a carpet. I'm pretty happy with the results, really expected lower readings although I've already convinced myself that I need a Twinstar E series hahaha, it's a beautiful light.
Tuister likes this.

Last edited by ande3480; 07-15-2020 at 08:11 PM. Reason: Styling
ande3480 is offline  
Reply

Tags
algae, dhg, dwarf, hairgrass, planted tank

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the The Planted Tank Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome