20+% water change will help replenish iodide to help it molt.
DO NOT DOSE ((( Iodine ))) it will kill EVERYTHING in your tank!
Dose ((( Iodide ))) which is that inverts need to help them molt.
Must follow instructions on bottle or else you'll overdose!
Iodide is consumed fast in aquariums by tank inhabitants, so whenever you do a water change it replenishes iodide and most people notice their inverts like to mold after water changes for that very reason. Low level iodide tanks have high mortality rates for inverts when they molt since it's very important for their exoskeleton.