no other gunk found in fact was surprisingly clean. Big round snail. Don't know how he got down there in first place. We certainly didn't buy him probably hitch hiker when we purchased the tank Might have even grown up in there looking at the size of him. !!! Lol.Netting will clog more frequently, but easier to clean I guess!
How big was the snail? Or was it blocking with the aid of some other gunk?
Sam
Have gutter guard over my return pump at the moment. Works well. Been advised not to on downpipes because algae loves to grow and often blocks up ? Thought on that one. ?A mesh, such as the plastic gutter guard available from the hardware shop, should suffice to stop large things going down the pipe but still minimise the potential for it to get clogged up with small stuff.
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As for single overflows - I have used one for my whole reefing life and never had a problem, although I have never had large snails in my tank.
The advice is probably correct, which means that you will need to weigh up the pros and cons of using the guard on the downpipe.Have gutter guard over my return pump at the moment. Works well. Been advised not to on downpipes because algae loves to grow and often blocks up ? Thought on that one. ?