Chemistry Issues..

[SmallFry]

Originally Posted by eli@fijireefrock.com

The presipitation or the extra calcium is in your system as you can see it from the pump impeller taking the Alk with it.
If your rock is breaking apart as this is for sure adding calcium and other impurities from the cement mix.
Possibly ****y off your bubble tip.

After looking more in detail into the exact contents of cement, I'm thinking I'll pull the rock and go for a more natural alternative. It's going to be a pain but I think in the long run it'll be worth it. I've never been that happy with the look of the stuff anyway. Biggest worry will be persuading two anemones and a clam to move house...