6 hour bacteria bloom after large water changes - The Planted Tank Forum
 1Likes
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 34 (permalink) Old 10-26-2015, 10:25 PM Thread Starter
Planted Tank Obsessed
 
PTrader: (1/100%)
Join Date: Dec 2014
Location: Colorado Springs
Posts: 357
6 hour bacteria bloom after large water changes

Has anyone ever run into this before? I have a planted 125G tank.

Water parameters are:

PH 6.8
Amm: 0
Nitrites: 0
Nitrates: 20

Whenever I change the water (25G or so) I end up with a white colored bacteria bloom in the water for about 6 hours.

6 hours after it peaks, and the water will be crystal clear again.

The fish seem totally unphased, and everyone has been happy.

I can only think of two potential culprits. Either it's the difference in water temps with what I'm adding (around 78) vs. what's in the tank (82), or the potassium I'm dosing (muriate of potash) is somehow causing a bloom.

Has anyone else run into this? From a visual standpoint the easiest thing is to just do the water changes at the end of the day, and I'll never really see the white water.

I'm puzzled as to why it keeps happening in this tank which has been running for almost a year now, and only this tank. This is the only tank that I keep this warm and it is also the only tank where I'm dosing potassium.

I thought it might be from rinsing out the sponge filter portion of the sump, (with tank water) but the bloom happens if I leave the sponges alone.
alcimedes is offline  
Sponsored Links
Advertisement
 
post #2 of 34 (permalink) Old 10-26-2015, 10:49 PM
Planted Tank Guru
 
Raymond S.'s Avatar
 
PTrader: (6/100%)
Join Date: Dec 2012
Location: Hot Springs Ar. 71901
Posts: 5,935
Can't help but wonder if the temp change may contribute.
Any particular reason for keeping it about 4F above normal in there ?

The shortest distance between any two points is a straight line...in the opposite direction...
Raymond S. is offline  
post #3 of 34 (permalink) Old 10-27-2015, 12:07 AM
Planted Tank Guru
 
Zorfox's Avatar
 
PTrader: (5/100%)
Join Date: Jun 2012
Location: Gainesville, FL
Posts: 2,105
It doesn't sound like a bacterial bloom to me. Instead, a precipitation or solubility issue with the potash you're adding. Maybe try dissolving the potash in hot water first and then slowly adding it to the tank.
Zorfox is offline  
 
post #4 of 34 (permalink) Old 10-27-2015, 12:31 AM
Wannabe Guru
 
essabee's Avatar
 
PTrader: (0/0%)
Join Date: Oct 2006
Location: Ranchi, Jharkhand, India
Posts: 1,012
Is it the only tank which is densely planted?

If you have a choice, you have a problem, till you elect your choice. No choice, no problem, only consequences, learn to live with them.
essabee is offline  
post #5 of 34 (permalink) Old 10-27-2015, 01:29 PM Thread Starter
Planted Tank Obsessed
 
PTrader: (1/100%)
Join Date: Dec 2014
Location: Colorado Springs
Posts: 357
Quote:
Originally Posted by Raymond S. View Post
Can't help but wonder if the temp change may contribute.
Any particular reason for keeping it about 4F above normal in there ?
There are discus in the tank so it's warm, and the spare heaters I use to warm up the water change water doesn't push it up much past 78. I might start doing warmer water up front. (In MN we have serious micro bubble problem so you have to leave your water sit out a day or so before using, haven't noticed that in CO.)

After the water change the temp doesn't really budge tank wide, but there is that initial push of colder water from the sump back into the tank.

Bump: Yes. Others are planted but not 75% of the surface area.

Bump: The potash 'looks' kind of red due to a coloration thing they add. It's the only tank where I have to dose K, so the only one where I'm using potash.

I liked the potash vs. other potassium options since it isn't dumping nitrates into the tank.

I've been dissolving the potash into a 5G container then adding it to the tank, but I'll try warmer water with it this time, and try it by itself to see if I still get the milky effect afterwards.
alcimedes is offline  
post #6 of 34 (permalink) Old 10-27-2015, 02:09 PM
Wannabe Guru
 
essabee's Avatar
 
PTrader: (0/0%)
Join Date: Oct 2006
Location: Ranchi, Jharkhand, India
Posts: 1,012
Is your water source from a bore well?

If you have a choice, you have a problem, till you elect your choice. No choice, no problem, only consequences, learn to live with them.
essabee is offline  
post #7 of 34 (permalink) Old 10-27-2015, 03:10 PM Thread Starter
Planted Tank Obsessed
 
PTrader: (1/100%)
Join Date: Dec 2014
Location: Colorado Springs
Posts: 357
It's tap water from the city. The TDS meter shows the tap water at 60 ppm. I wonder if it isn't some degree of kicked up substrate as well that is just taking a while to settle. It never seems to filter out though, and it's not noticeable immediately after the water change, but gradually gets worse over 6 hours or so, then fades over the next six.
alcimedes is offline  
post #8 of 34 (permalink) Old 10-27-2015, 03:49 PM
Wannabe Guru
 
essabee's Avatar
 
PTrader: (0/0%)
Join Date: Oct 2006
Location: Ranchi, Jharkhand, India
Posts: 1,012
Actually I was thinking of what happens with me. I use bore-well water and just after water change my planted tanks gets foggy. I found out that my water contains a seasonal fluctuation of 10-20 ppm ferrous salts, these change into insoluble ferric salts in my tanks to cause the fogginess which dissipates due to filtration.

If you have a choice, you have a problem, till you elect your choice. No choice, no problem, only consequences, learn to live with them.
essabee is offline  
post #9 of 34 (permalink) Old 10-27-2015, 06:00 PM Thread Starter
Planted Tank Obsessed
 
PTrader: (1/100%)
Join Date: Dec 2014
Location: Colorado Springs
Posts: 357
Huh, that sounds remarkably familiar to what I'm seeing. I'll dig around some brewing forums, they're about the only people more anal about their water parameters than fish people are, see if there are similar dissolved salts in the water here.
alcimedes is offline  
post #10 of 34 (permalink) Old 10-27-2015, 07:04 PM
Algae Grower
 
PTrader: (0/0%)
Join Date: Sep 2015
Location: Rolling Meadows IL
Posts: 17
Happened one time when I took everything from my 29 gal to a new 40b setup. 60% of the new water was tap and 40% from the 29 gal.
What you are witnessing is chlorine killing your beneficial bacteria, I lost 10 neon tetras that night(fish were gasping for air in the morning). Wierd things because I treat my water with Prime.
algaewar is offline  
post #11 of 34 (permalink) Old 10-27-2015, 07:17 PM
Wannabe Guru
 
lksdrinker's Avatar
 
PTrader: (8/100%)
Join Date: Feb 2014
Location: NY; LETS GO METS
Posts: 1,875
Quote:
Originally Posted by alcimedes View Post
In MN we have serious micro bubble problem so you have to leave your water sit out a day or so before using, haven't noticed that in CO.

My guess was going to be the microbubbles/dissolved gasses that come from the tap. Especially if it just takes care of itself after only a few hours.

Rich's Fishes
Curator of an ever growing fishroom that currently houses 30 different tanks. Most full of at least water....some even have fish!
lksdrinker is offline  
post #12 of 34 (permalink) Old 10-27-2015, 09:22 PM
Planted Tank Enthusiast
 
PTrader: (0/0%)
Join Date: Apr 2012
Location: Edmonton, Canada
Posts: 824
This used to happen to me as well. I would do a water change and use fish store brand water treatment. Tank turned cloudy every time. I switched to prime, doesn't happen any more.

I use city water which, up here is liquid rock. Never changed the dosing habits just switched to prime.
creekbottom is offline  
post #13 of 34 (permalink) Old 10-27-2015, 09:25 PM
Planted Tank Obsessed
 
plantetra's Avatar
 
PTrader: (0/0%)
Join Date: May 2014
Location: West Bloomfield, MI
Posts: 380
Happens to me when I add Potassium and Iron together. Do you have any Iron source in your tank like root tabs?


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
plantetra is offline  
post #14 of 34 (permalink) Old 10-27-2015, 10:54 PM Thread Starter
Planted Tank Obsessed
 
PTrader: (1/100%)
Join Date: Dec 2014
Location: Colorado Springs
Posts: 357
Quote:
Originally Posted by plantetra View Post
Happens to me when I add Potassium and Iron together. Do you have any Iron source in your tank like root tabs?
Ah, yes. I added red clay as part of the soil mixture when setting up the tank in order to have a steady source of iron in the tank. It should be capped with the sand and rocks on the top layer of substrate, but probably still leaches into the water regularly.

I've been treating the tap water with API conditioners previously, and had been basically double dosing what I should on the off chance there were any chloramines, but just ran out of those bottles and switched to my Prime bottle. The last batch of water was treated with Prime, so when I do the water change tomorrow I'll see if that makes any difference.

I'll take some before/during and after photos as well. For all the looking I've done off and on about this problem, almost every hit comes back talking about new tanks or blooms that last for days. Almost nothing (except others in this thread) that had a bloom for under 24 hours with every water change.
alcimedes is offline  
post #15 of 34 (permalink) Old 10-28-2015, 01:30 AM
Planted Tank Obsessed
 
plantetra's Avatar
 
PTrader: (0/0%)
Join Date: May 2014
Location: West Bloomfield, MI
Posts: 380
Quote:
Originally Posted by alcimedes View Post
Ah, yes. I added red clay as part of the soil mixture when setting up the tank in order to have a steady source of iron in the tank. It should be capped with the sand and rocks on the top layer of substrate, but probably still leaches into the water regularly.

I've been treating the tap water with API conditioners previously, and had been basically double dosing what I should on the off chance there were any chloramines, but just ran out of those bottles and switched to my Prime bottle. The last batch of water was treated with Prime, so when I do the water change tomorrow I'll see if that makes any difference.

I'll take some before/during and after photos as well. For all the looking I've done off and on about this problem, almost every hit comes back talking about new tanks or blooms that last for days. Almost nothing (except others in this thread) that had a bloom for under 24 hours with every water change.
I would also try not to add any ferts to see if you will still have the bloom.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
plantetra is offline  
Reply

Tags
None

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