I have 3 vortech mp40's. I have also had snails get into them when I had them off during the times I feed my coral. upon start up I get a jam and a lot of frustration. I was wondering, how many of you actually use the foam covers that come with the pumps? can you give me the pros and cons. I haven't been using them because I figure they would start to clog up and hamper and slow the flow of the pumps. also I couldn't actually see the impellers moving to make sure they were working at a glance.
please any pros and cons would be greatly appreciated.
please any pros and cons would be greatly appreciated.

