saying "its a plumbing problem" is not realy helping.
I said plumbing problem also, but pointed to a specific problem.
I know thoues of us who have built our reefs know instinctivly where to look, but think of this as what would you check in a system that you have never seen befor.. which also makes it alot harder not seeing it.
my guess as I said is a syphoning problem (which is a plumbing problem
) but who can say for sure never seeing how it is plumbed. is it syphoning in the overflow system, the skimmer ect? I had a skimmer that would do that.
some good pictures showing the set up and how its plumbed would go a long way to getting help figguring this out.
check to make sure the skimmer discharge is not submerged and if it is there has to be a high point for air to get into the discharge line to act as a syphon break or you will create a syphoning cycle in the skimmer.
Steve
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