Suds in the sump?

[osras1]

I am starting a new tank and I am using some rock that I had used in a previous tank. This rock had hair algae on it, so I ot has been sitting in a dry bucket for about 8 months.l did a good scraping of it then bleached it with a mix of ro and bleach. After 2days soaking, in a Rubbermaid trash an, I took the Ockham out and gave it a long rinsing. I then I put the rock in my new tank that was cycling(nothing else in the tank). In my sump I am getting a thick coating of suds on the water. What is this from? And will the suds go away? Are the rocks not rinsed enough?

 

[kgeig001]

You probably should have rinsed the rocks longer but seeing that they are already in the tank I would just wet skim and run return drain into a filter sock until things clear up.

 

[Kentech5]

Im thinking some prime might be a good idea in case some bleach is left over.

 

[osras1]

Thanks guys