coral box backup battery

Here’s my Biocube 32 with Steve’s Led. 1st chamber > Aquamaxx Fr-s Carbon Reactor 2nd chamber > inTank media basket with Filter floss, chemipure and refigium. Aquatic life 115 protein skimmer 3rd chamber > sicce syncra 1.5 357gph Return pump, coralife uv sterilizer, Tunze ATO 3152, heater...