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View Full Version : Flourish 250 ml bottle vs 500 ml bottle dosing



DIYMatt
01-18-2004, 12:01 PM
Hello all!

A freind of mine just started a 10g plant tank and I told him to dose 2-3 ml of Flourish at least twice a week for his relatively high light, excel fed tank. This corresponds to my own experience with Flourish in a 500 ml bottle. He questioned me several times about that dose and had nothing but hair algae/green slime algae problems for a couple of months. Even with Tom Barrs peat/mulm in the substrate and his filter running for a month on my tank be fore he used it. His levels of PO4 and NO3 were essentially normal. I finally looked at the 250 ml bottle of Flourish he had and it said to use 1-2 mls per 50 gallons. I went home and my 500ml bottle says 5 mls per 50 gallon. We cut his dose of Flourish in half and his tank is balancing nicely.

- Is this standard for Flourish to have two different concentrations?
- Has the formula just changed and he had just an older bottle?

I could probably just ask Seachem about it, but I thought I would post here because a lot people here recommend doisng amounts and maybe we need to specify what size bottle it comes out of to make sure we aren't telling people to overdose their tanks.

Canuck
01-18-2004, 6:11 PM
See here
http://64.191.28.50/forums/showthread.php?s=&threadid=20813

HTH