Wonder shells are nothing like cuddlefish bone. It’s a proprietary water clarifier and micro nutrient booster. The cloudiness could be excess food OR the type of food you are using. When I feed my tanks cucumber they get cloudy until the snails and ostrocods eat it all. Use wonder shells in 1/3 recommended dose. They supposedly clear water cloudiness. They work for me.Thank you, it is not me the crypts are doing the heavy lifting.
No, are they similar to cuddlefish bone what do they do? I just did a search and at first glance I will say my water is very hard and contains no chlorine.