So I have 4 turbo snails in my 75-gallon saltwater tank and a goby. I do have Macroalgae plants in the tank to help with nitrates which they do a lot but the snails seem to eat the whole macroalgae plant and go on to eat more of the plants, I do have diatoms in the water so that's why I originally bought them for cleanup and uneaten food in the sand. So, do you have any suggestions on what other cleanup crew I could get that won't eat any microalgae plants but at least helps clean the diatoms in the water?