food

I have 75 gallon fowlr tank 20 gallon sump aquaclear 70 and a fluval 406 filter
Livestock
Bursa trigger
Tomato clownfish
Yellow tang
2 3 stripe damsels
2 engineer gobys
Coral beauty
Firefish
1 crab
2 snails
I feed them a mix of flakes and i also take tank water and put garlic gaurd and 2 cubes of the following brine shrimp mysis shrimp plankton and marine cuisine i wanted to put one cube of beefheart in the mix hurd mixed reviews what are some suggestions