I won a Refugium and it’s 2ft long 1 foot wide and 1 ft deep. It’s predrilled with fittings and with light. How much water does it hold? How much do these normally go for and would I use it if I already have a sump with protein skimmer and algae scrubber going?
They don’t cost much and you could use it for an external refuge. You can have bugs for fish (mandarin or wrasse) and grow chaeto to help with nitrates or sale.
A handy calculator for calculating the volume of your fish tank. Use this calculator when working out the holding capacity of your fish tank. If you have other questions, a convenient form will allow you to send questions to an experienced aquarist.