20g tank with fancy guppies, water parameters are good with weekly water changes of about 30-50%. Started flashing a few days ago and very lethargic, 5 dead within 3 days. Some showing deterioration of fins with 1 or 2 showing signs of ick. I was going to treat with melafix/pimafix. Will this also cure ick? it is safe to use mela/pima fix in combination with super ick cure?