Help with Ich
Hi! Hopefully I'm posting this in the right place because I'm new here.
We have a 10 gallon freshwater aqaurium that just killed a few fish due to pesky Ich. The parasite clearly came from PetSmart when we brought in 3 new neon tetra to add to our collection of the other 3 tetra (totaling 6). The ich ended up killing 4/6 tetra and 2 betta fish (NO, they weren't living together...one died so we got a replacement not knowing what killed the first, and the 2nd betta then died).
After going to Petco, where we've had great customer service, I asked the aqaurium specialist about ich. He gave me Kordon Ich Attack. He said to remove the filter insert (but keep the filter running otherwise) and add the daily recommended dose to the tank for 5 weeks.
My question is...can I do a complete water change weekly like I was? The tank is getting funky after only 3 days and despite the fact that the Petco guy said it would turn gross that it's ok. I feel like if I'm adding a daily medication then I should be able to take everything out tomorrow morning before I put the ich stuff in, clean it, put all new conditioned water in, then the med.
Also I should add that we know *now* to quarantine new fish before adding them to the tank. No one told me this and I honestely didn't know. We won't be adding back any fish for about 3 months from now.