hey guys i just cought a white crappie the other day and i put him in w/ my florida gar. the crappies is prolly 6-8" and the gar is 12-13" they are getting along great but after i did this i realized "what if the crappie has parasites?" shoud i go ahead and treat the tank? and if so what should i use? also what conditions should a crappie be kept at? the tank they are in is around 75 degrees and close to 7.0 ph.