Are dosing rates right ?? - The Planted Tank Forum
 
LinkBack Thread Tools Display Modes
post #1 of 5 (permalink) Old 11-11-2014, 03:36 PM Thread Starter
Planted Member
 
fishbone11's Avatar
 
PTrader: (0/0%)
Join Date: Sep 2014
Location: Eastern Pa
Posts: 171
Are dosing rates right ??

Using the 'calculator' on Tom Barr's site, I came up with these EI values/quantities for a 38 gal tank;

Plantex CSM+B 1.101g / 0.5PPM
KNO3 1.759g / 7.5ppm
KH2PO4 267mg / 1.3 ppm
K2SO4 2.404g / 7.5ppm

To be dosed 2 to 4 times/week

I believe this is to be used with high light and co2.

I'm running low light/dirted/med planting.

My take on what I have read is that the above values should be reduced to 25% with maybe 2 doses/week and a weekly water change.
Is this a good starting point??
(this has my head spinning.LOL)

Other parameters (still in cycle);
pH 7.6
Ammonia 0.5
Nitrite 2.0
Nitrate 40
GH 4
KH 6
Lights = on 4hrs, off 4hrs, on 4hrs
fishbone11 is offline  
Sponsored Links
Advertisement
 
post #2 of 5 (permalink) Old 11-11-2014, 04:00 PM
Algae Grower
 
PTrader: (1/100%)
Join Date: Sep 2014
Location: NJ, USA
Posts: 142
A couple of questions:

1. How are you cycling?
2. Are you dosing anything at present?
3. How many plants are in there?
rrattani is offline  
post #3 of 5 (permalink) Old 11-11-2014, 06:57 PM Thread Starter
Planted Member
 
fishbone11's Avatar
 
PTrader: (0/0%)
Join Date: Sep 2014
Location: Eastern Pa
Posts: 171
It's a fishless cycle started from the dirted substrate and augmented with 1 to 2 ml ammonia to keep 2ppm.
However, I saw a stall today with no change in ammonia, nitrites or nitrates.
Planting is about 50% of a fully planted tank.
Haven't dosed anything yet.

I'm about to start Excell and Flourish Comprehensive.
I will order up dry ferts once I figure out how/when to use them.
That is why the above question.
Thanks
fishbone11 is offline  
 
post #4 of 5 (permalink) Old 11-11-2014, 09:40 PM
Algae Grower
 
Pauliukas's Avatar
 
PTrader: (0/0%)
Join Date: Nov 2014
Location: Lithuania, Vilnius
Posts: 74
Send a message via Skype™ to Pauliukas
Quote:
Originally Posted by fishbone11 View Post
Using the 'calculator' on Tom Barr's site, I came up with these EI values/quantities for a 38 gal tank;

Plantex CSM+B 1.101g / 0.5PPM
KNO3 1.759g / 7.5ppm
KH2PO4 267mg / 1.3 ppm
K2SO4 2.404g / 7.5ppm

To be dosed 2 to 4 times/week

I believe this is to be used with high light and co2.

I'm running low light/dirted/med planting.

My take on what I have read is that the above values should be reduced to 25% with maybe 2 doses/week and a weekly water change.
Is this a good starting point??
(this has my head spinning.LOL)

Other parameters (still in cycle);
pH 7.6
Ammonia 0.5
Nitrite 2.0
Nitrate 40
GH 4
KH 6
Lights = on 4hrs, off 4hrs, on 4hrs
There is some mistakes. you are going to add 7,5 ppm of K (target) from KNO3 with but dont you see that your are going to add KH2PO4 and K2SO4 these elements has K inside too? so you are going to overdose potasium my sugestion is to calculate your doses of KH2PO4 and K2SO4 for NO3 and PO4 and then look how many of K these elements has. the target of K from K2SO4 is stil 7,5 - ppm of K from KH2PO4 - ppm of K in KNO3 = K in ppms target fr K2SO4 dosing. ill help you:

K2SO4 544 mg - K 1,7 ppm
KNO3 1,759 g - K 4,73 ppm - NO3 7,5 ppm
KH2PO4 267 mg - K 1,07 ppm - PO4 1,3 ppm
K in PPMS from all additives is 7,5 ppm (1,7+4,73+1,07)

By the way your nitrate levels is very high. Not the right time to start adding more.

My offer for dosing:
Dose 1.923 g K2SO4 and 267 mg of KH2PO4, untill the nitrates levels start to fall, when it reaches 20 pp and under start dosing as i sugested.

if the cycle is in the begining i sugest to reduce lighting period 3 on 1 off 3 on. Don't do very huge gap between lighting.

One more thing, while it cycling (first month) the best way to WC is that:
day 1 macros + Excel (1/2 dose)
day 2 micros
day 3 macros + Excel (1/2 dose)
day 3 micros
day 5 50% Water change. + Excel full dose
Pauliukas is offline  
post #5 of 5 (permalink) Old 11-12-2014, 03:28 PM Thread Starter
Planted Member
 
fishbone11's Avatar
 
PTrader: (0/0%)
Join Date: Sep 2014
Location: Eastern Pa
Posts: 171
Pauliukas, great response. Thanks.
I like the reduced photo period, and have changed to it.
My Nitrates are high to start with out of the kitchen tap (10 to 20 ppm). That was a disturbing discovery. This makes it more difficult to stay below 40ppm.
As of this morning I have decided to forgo EI fertilizing until a later date.
Just too confusing.
I will use Flourish Comprehensive & Excell.
I contemplating using Flourish Stability to push the cycling ahead, and after water changes.
Thanks for everyone's help.
fishbone11 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