Benji-star--Don't know if your conditions permit, but there are external cannisters that can be buried up to the lid. I have a small 100 gallon pre-formed filter for 3 years-so far no problems. It is very thick-walled yet fexible enough to prevent cracking.I've been using an internal box filter and it is becoming a real nuisance cleaning it. Having live plants creates lots of debri that constantly clogs the filter.I've just ordered an external cannister for ease of cleaning. I can keep you posted on how well it works.