Hello I recently purchased 3 pictus catifsh for my 20 gallon. I was going to buy some tiger barbs but they were out. A lot of the tanks I saw had white spot in them but I took a chance and bought these fish anyway since this place has 90 day warranty on fish. I cycled tank for about 5-6 days before I put in fish and added that cycle bacteria stuff. When I put them in the water they were swimming at the top like maybe they were stressed. I did a test before and as usual the ph was slightly high and ammonia was good. Anyway I noticed they had the white spot. so tried some new medication. It has malchinte green with formeldahide. I am hoping the formeldahide may kill the ick quicker. I tried the malchite green before and killed them (fish). I should have turned up heater but the 50 watt could barely keep it at 74. I have since purchased a 100 watt. I found out later I should have halfed the dosage for scaless fish. I notice a lot of the medication doesn't give very good directions. They don't say if a partial change is required or not. Or I will notice that it will give better instruction on the throw away container that it was packaged in. The bottle won't tell you near as much detail. I turned the heater up to a little past 80 degrees and this morning also added some of that jungle lab tablets for secondary infections. I am thinking about possibly adding salt at a later date. Anyone have any info about how much to add for catfish/per gallon. Any other tips I can do? Should I turn up the heater more? I also bought one of those stick areators. I used to use only the power filter. Those stick things are great. They stick on the wall with suction cups and really pour out the bubbles. One poor catfish swims around in that current all the time. I think it helps scratch his itch (ick). What is the actual temp that kills ick? I know they stop breeding at about 78? This site has really helped me a lot. I am learning more every day. ??? ??? At least I think I am. I will see if these fish survive.