Hi, I have an Fiskars 57 gallon rain barrel in my shed i no longer use, I got an eshopps 1800 overflow box off of ebay and wanted to turn the rain barrel into a sump to increase water volume and hide heaters for my 225 gallon. will this work and is it safe? the material it is made out of is polyethylene?? is this fish safe? I will post photos when done thanks I am new here
