If you want to do that, why not try the Tomm Barr approach. See this link:

http://www.aquatic-plants.org/fert/e...st_index1.html

You can get Potassium from "No salt".

Phosphorus from Fleet enima (really!). Carefull - it is very potent. A few
drops in an aquarium is all that is needed!!

Nitrogen from Potassium Nitrate - stump remover.

Magnesium - Drug store epsom salts.

Traces - use flourish or buy from various trace element suppliers such as
http://www.hydroponics.com/info/aquatics/pmdd.htm
You can also buy the other chemicals from them also.

A lot of info in the web on doing this.

--
Bob Alston

"LeighMo" wrote in message
...
has anyone calculated the amount of flourish fertilizers their tanks
require
and then mixed large quantities of various flourish types together (like
flourish potassium + flourish trace + flourish) in the proper
proportions.

Yes. I e-mailed Seachem and asked them if it would be okay to do that,
and
they said to go ahead. So I do. :-)

Also I ordered a bottle of flourish iron but it says I already get iron
from
normal flourish so I doubt I will be adding this.

I use it. IME, Flourish alone doesn't provide enough iron.




Leigh

http://www.fortunecity.com/lavender/halloween/881/