Kypros

Dang, you remember I have a 29 gallon tank? Actually right now I am talking about a 18 gallon ADA. (have GSA in my 29 gallon as well, just not as much). I am fertilizing with the standard EI doses for both tanks.

Philosophos

I'm headed out grocery shopping. I'll do some calculations later tonight for you.

-Philosophos

Kypros

I make standard solutions of 40g KNO3 in 500ml water, and 15g KH2PO4 in 500ml water. for the 18 gallon, I dose 10 ml of the KNO3 solution and 5ml of the KH2P04 3x week.
thanks

Philosophos

Nice to see someone else making them; liquid is the superior way to go

So as is we'll say you're column is around 50L (I usually knock off about 20%)

What you're dosing now would be:

(94.9714822/136.0856722*15000)/500/50*15 = 6.280920879ppm

Wow, looks like you're already running the phosphates high. The GSA shouldn't be such a problem at those levels; you're probably pushing around 10ppm PO4 in the column. Unless you've got other issues with your tank, the GSA is probably as low as it's going to get.

Try the magfloat

-Philosophos

ianryeng

with respect to magfloats I have stopped using mine until I can replace it on my freshwater tank. I discovered the hard way the flourite is magnetic (should have realized since its high iron) and is now permanently stuck in small bits over the magnets and cannot get it out of the velcro/abrasive. It scratched the inside of my tank quite badly before I noticed what was happening.

I am not saying not to get one as they are very handy, but more warning others to not make the same mistake

good luck w the algae!


-Ian

TAB

I just use a credit card...

Tex Gal

They're good in so many ways....

Kypros

certainly less dangerous in the aquarium. . .