Im new to cichlids and recently just bought a 90 gallon tank, and i have an Arena XP 3 filter.. not sure how many gallons per hour it does cuz i threw out the box and forgot the number, but i know its meant for 165 gallon tanks. The temp of the tank right now is at 27 C. I have crushed coral to raise the PH, lots of rocks, a few fake plants. I did a fishless cycle for 2 weeks. Added all the chlorine removing stuff. I still dont have a water testing kit but i will be buying one on monday, todays sunday and the LFS is closed now. The fish i have in there i got a week ago from today from petland i got 6 cichlids followed by 3 more 4 days later. I got 2 electric yellows, 2 demasons, 1 red zebra, 1 albino brichardi, 1 rusty, and one i dont know the name of its grey with dark black stripes. All the cichlids are a little less than an inch long, I also have a 6 inch pleco, so 9 fish in all. Almost from the very beginning of adding the first fish i saw them rubbing against the rocks, not very often and it first started with the electric yellows. But eventually all the other fish started to do it, After adding the second set of fish they havent started to rub. But they all came from the same tank at petland. Spending hours staring at these little fish i cant see any white spots.. although around the zebra and electric yellows there are small neon blue spots by the gills but there semetrical with the other side so im guessing there supposed to be there. I recently did a 15% water change 2 days ago.. Should i buy the cichlid salt stuff, or any other kind of medication?? i would really like to know whether my fish are sick or if their just itchy.