|
07/11/2020, 01:07 PM | #1 |
Registered Member
Join Date: Feb 2016
Location: England, Earl Shilton
Posts: 1,452
|
How to raise phosphates
Hello I need to raise my phosphates.
They were undectable on my icp and on the hanna phosphorus checker it’s 0ppb. So with taking into account the Hanna error range it’s between 0.000 and 0.015. I don’t want to feed more as I feed twice aday and I dont want lots of uneaten food rotting in my tank. I’m only running the skimmer through the night so it’s only in for 10.5 hours aday. What’s is the go to chemical? Thanks
__________________
If in doubt ask! |
07/11/2020, 08:29 PM | #2 |
RC Mod
Join Date: Mar 2002
Location: Mountain View, CA, USA
Posts: 88,616
|
I think Amazon still might be selling food-grade trisodium phosphate. That's where I'd look first.
__________________
Jonathan Bertoni |
07/11/2020, 08:41 PM | #3 |
Registered Member
Join Date: May 2020
Posts: 23
|
|
07/12/2020, 02:52 AM | #4 |
Registered Member
Join Date: Mar 2020
Posts: 474
|
If your tank is not too highly stocked, maybe add a couple more fish?
|
07/12/2020, 03:10 AM | #5 | |
Registered Member
Join Date: Feb 2016
Location: England, Earl Shilton
Posts: 1,452
|
Quote:
I can get Seachem phosphorus which is for fresh water planted tanks, little more pricey but would it work? My tank is 200 litre water volume how much would I need to dose to raise phosphates to 0.03? I want to do it gradually, so what would you recommend? Here’s the instructions for the Seachem product. https://www.dropbox.com/s/1ab88yj2u0..._0720.PNG?dl=0
__________________
If in doubt ask! |
|
07/12/2020, 03:55 AM | #6 |
RC Mod
Join Date: Mar 2002
Location: Mountain View, CA, USA
Posts: 88,616
|
The SeaChem product should be fine. I would try ⅕ of the "beginner" dose as a starting point. So that's 0.5 ml per 20 gallons (or 80 liters) of actual water volume. Do you have a good estimate of the amount of water in the system?
__________________
Jonathan Bertoni |
07/12/2020, 04:00 AM | #7 | |
Registered Member
Join Date: Feb 2016
Location: England, Earl Shilton
Posts: 1,452
|
Quote:
__________________
If in doubt ask! |
|
07/12/2020, 08:02 AM | #8 |
Registered Member
Join Date: Sep 2012
Location: Toronto, ON
Posts: 271
|
Use the seachem stuff but just go slow. Very slow, as in for a few weeks. IME P04 will stay stubbornly low for a while and then jump.
Sent from my iPhone using Tapatalk Pro |
07/12/2020, 12:57 PM | #9 |
Crab Free Zone
Join Date: Sep 2017
Location: Ontario, Canada
Posts: 2,906
|
I use Seachem Phosporus to show trace phosphates.
In my 65g, with 50g water, I use 1ml per day, which maintains my phosphates at 0.03. Three weeks in now, and testing with Salifert and Hanna daily. |
07/12/2020, 05:58 PM | #10 |
RC Mod
Join Date: Mar 2002
Location: Mountain View, CA, USA
Posts: 88,616
|
I'd probably try 1.5 ml.
__________________
Jonathan Bertoni |
|
|