You will need a hang on filter, heater, i like a airstone, and some pvc or rock for fish to hide out in and a cheap light. Try to use half your water from your main tank and the rest ro/di so salinty levels are around 1.015 when mixed. Then you need to acclimate them into the tank. After i day try to remove 5 gals a day and add 5 gals of ro/di water to get salinty at 1.009. This is the way i kill ich but if you dose meds just use all your tank water then dose not salinty at 1.009