I have a 73g freshwater, planted tank that I have been treating to for Ich. Ph ranges from 6.8-7.2, Ammonia 0, KH 4, GH 8, Nitrite O, Nitrate 5. API Test kits. Temperature currently at 82F. Stable aquarium.
I have clown loaches, kuli loaches, sumatra 2 spot catfish, red serervides, plecos, blue acaras, and a royal spotted trout. Java ferns and Anubias.
A month ago I purchased the Anubias and 2 Severides from a bad reputation LFS (I found this out later) and did not quarantine. About a week later I got an Ich breakout in the tank, my first in 10 years. I raised the temperature to 86F and treated with Nox-Ich (Malachite green and salt) for 6 days and signs of Ich dissapeared - then did a 50% water change.
All was good for 2-3 weeks and then fish started showing signs of Ich again. This time I treated with Seachecm Paragaurd (as the Nox Ich and high temp was tough on my fish and my filter). I am on day 7 of treatment, and the Ich seems to be spreading quickly on one particular clown loach. Other fish remain the same, but have some spots.
I want to switch over to Rid-Ich (Formulin and Malachite Green) as I feel the Paraguard is not strong enough.
-Should do a partial water change and switch meds right away? Of should I insert carbon and other chemical filtration (Purigen, my normal phosgaurd, etc.) back into the tank and let that run for a day or two before I start the new treatment.
-Am I jumping the gun? Should I stick with Paragaurd? I hesitate because after 7 days things should be getting better, not worse, and I want to be pro-active.
Any thoughts much appreciated~!