Thank you and hallo to all. I have has tropical fish for years and have noe ventured out to become familiar with Marine Tanks. I bought 2 x nano skimz cubes to get to know the system and water first. I have a snail and some life rock(with a green mushroom looking plant growing on the rock, plus a smalll baby one as well) in one and in the other some sort of an anemone (will post pics later) which was attached to a piece of live rock already. What testing do i need to do as i regulary need to top up with some salt water, and i have a heater in each tank which keeps the temp at about 26, 27 degrees. The lightning seem to be ok for now. Any tips on how long i should run these tanks before i can safely say that they doing fine? I am feeding the anemones every other day some shrimp (frozen). I do not see them eat it as such but i assume that the pieces drifting into them gets absorbed?