So I got some chaeto a few months ago and wouldn’t you know it after 13 years in the hobby and being extra careful I got the planaria. Should have fresh water dipped it but I didn’t. I’ve been basting every other day now and it’s becoming a real PITA. Never used this product. I would like people experiences good and bad on using FWE in a SPS tank. Bought it last month and just nervous on using it.