I once had a phytoplankton culture (well kindof) i wanted to grow and reproduce brine shrimp since i thought it would be a great source of food for my fish, but i learned that you needed phytoplankton to feed brine shrimp. I saw many people on the internet would grow brine shrimp and phytoplankton separately, and then feed the phytoplankton to the fish and i did not do this. I put both phytoplankton and some brine shrimp in a 10 gallon tank with a light. The phytoplankton grew, (very little) and the brine shrimp slowly died out. So i have a couple of questions about phytoplankton cultures. First of all do you guys think that they are worth it to have? would they actually help save money and feed corals well? Could i pair it with a brine shrimp culture to then have fish and coral food? I think that it seems like a good idea, but do the drawbacks outweigh the benefits? The only drawbacks i see in having a phytoplankton culture is that they might be a little extra work and you need to get certain equipment for it, but i think this is goes for everything and it is not that bad. I would like to hear from someone who has had (or has) a phytoplankton culuture as well as others who may have a valid imput. Thanks in advance!!!!