Tank leak?

[hrdneglcry]

So I noticed my stand is wet near the back corner of the tank. Whats weird is that seems to be the bottom poryion of the wood. I have a 180 gallon acrylic. I have beneath in a thick peoce of ply wood and above that I have a thick piece of styrofoam. I cannot see water on the styrofoam or on the top of the plywood above where its wet. I cannot see any filtration leaking.

 

[KrisReef]

Is their a over & bulkhead fitting in that corner?

 

[hrdneglcry]

Its my Aqauclear 110. I guess I have to pull it and see. I think an old crack got bad.

 

[Tamberav]

old crack in what?

I have had the HOB's spill water over before.