What's wrong with my aquarium?

The plants, especially the anubias, have a white coating. The aquarium has been running for about six months. Is this because there's too little CO2 in the water? Our tap water has also been quite calcareous in recent months. The betta fish living in it doesn't look so good either!

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Jonas0099
6 years ago

Is the cover going off and is it on all?

The waterpest looks healthy.

If the fish isn’t good, I’d have water values tested.

iqkurti315
6 years ago

lime deposits under water? isn’t….

if there’s only one sheet, take off and be good.