Fritz Aquatics PRO - F/2 Algae Food PTA- 1 Gallon (84200)

A nice dense chemostat culture of Tetraselmis on this two part media. Running at f not f/2 concentration (i.e. twice as concentrated)

I grow phytoplankton to feed my corals and decided to try this two part, I experimented with other brand F2 and the results are amazing, this yield a very concentrated deep green culture.

When I mixed the two components together in equal amounts by volume, within 2 days I found a cloudy "goop" occupying the bottom 10% of the sterile glass container. I do not know if this is good or bad, but it looks terrible. I am using the part of the mixture without the sediment and it seems to be working okay, I am not sure if it is as effective as other sources of F2 I have bought in the past though. I do know those other sources did not drop out this ugly sediment. In the attached pictures, first shows immediately after mixing. Second shows 1 hour after mixing. Mixture was transferred from 500ml Lab flask to just emptied clean water bottle when first mixed.

What can I say? My algae, plants, and shrimp are very happy! This product is very easy to use and works very well. Thank you very much.

I have been growing phytoplankton for years, and have used many fertilizers from proper f/2 formulations to miracle grow and miracid. I have had by in far the best luck with the widest variety of phytos using Fritz's f/2 formulation.Pro-tip; keep in fridge to keep possible bacteria contamination to a minimum.

Worked for growing the algae, but you have to guess how often to use it, as their are no instructions for this on the product label. I called and left a message with the company and am waiting on a reply to this question of how often to use the directed amount.

Doesn't grow my plankton like a regular F2, this one requieres a second component

works great