29 gallon. mostly softies. small tomato clown and medium fatty royal gramma. i have a red flatworm problem. i saw that using flatworm exit they will all expire for the most part minus eggs but will release a toxin into the water so you have to do additional water changes and run carbon etc. I was going to see if its worth just doing flatworm exit in a bucket with the rocks individually and then shaking them off, rinsing maybe in another bucket of SW and then putting back in tank to help? i just got a springeri damsel and was wondering if anyone has ever used them for flatworms and if they actually helped at all? Thanks in advance for any help/experience/advice.