105G Custom Shallow Paradise

[kien]

I thought that check valves worked on a spring.. doesn't that restrict flow as well ? I suppose there are non-springy check valves? I wouldn't know, I haven't used one in a zillion years.. I wonder if fishy will come over and skin my new stand as well.. I have no motivation at all to skin the new stand.. heck, i hear he is doing plumbing these days too. I should just get him to finish my build.