IMO, liquidfy marine is not a suitable food for fishes as it is mainly used to feed corals and other invertebrate but even so IMo it is a useless product containing mostly yeast and egg which added in excess will easily pollute the tank.
The worst thing when you start adding fish is that you found yourself in love with damsel due to its blue striking colour. You buy a few, put into your tank then you notice that this blue cutie turn into devil.
When you go rebor*, got to the section where they place thier invertebrate, there you will see plenty of there kind of eel.... usually place in small container like those for keeping fighting fish.
I have see this skimmer running...... basically the skimmate produce is mostly green tea looking and i believe that with better skimmer like weipro, aquaC or H&S, your tank will do much better