Laith

Any good tips on removing calcium deposits on the inside top of the glass in a setup tank?

I've searched for the answers but most solutions involve an empty tank.

I just received my new Arcadia 4x 39w T5 Overtank Luminaire . So off comes the hood and the new lighting goes on (sits on "pedestals" attached to the ends of the aquarium). Looks great!

But... I have quite a lot of accumulated calcium deposits on the top of the glass that was hidden by the hood. Now its visible. It's a thin layer and most of it comes off with a razor blade but how to clean the rest off so that the glass is spotless?

dennis

Scrubby, scrubby, scrubby. Maybe try some blue filter material as a mild scrubber and keep the area wet with tank water. Just guessing though. Can you raise the water level so the area stays wet for a few days?

JanS

That's a toughie since you're working inside a setup tank. I have a heck of a time removing the deposits from even the canopies, etc.

Some of the scrubbers that work very well for me are the yellow non-stick pot scrubbers (just the thin flat ones with no sponge or anything). The Dobie pads also work well, but either way, you're going to need lots of elbow grease.

It might also work to drop your water level way down and try to pre-soften it with a steam cleaner (if you have one), but I'd be nervous about accidentally nailing one of you plants, or overheating the tank that way.

bharada

Is this Ca deposit above or below water? I've been under the impression that if you put the deposits under water (particularly in our CO2 rich environment) the deposits will dissolve back into solution on their own.

I think a razor blade is probably the best method to scrape off the large deposits. I'd hesitate to use any scrubber pads as anything coarse enough to scrub off the Ca deposit will likely cause scratches in the glass.