Randy Holmes-Farley
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My Tank Thread
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Upon further inspection it appears that the hose that attaches the hose to the tank return nipple has a metal hose clamp and it is rusted. Looks like the bulkhead must have a slow leak and there is a 1-1.5" salt stalactite which sits above the sump. I take it this can very well be the culprit I'm looking for? I'll be switching to a plastic hose clamp
That can release metals, etc.