i just sold my 3 cichla so now my 180 is empty im gonna put my super nice male frontosa,whose 13" give or take n been stuck in a 65 for a bit now,in the 180. my question is the 65 has a ph of 8.2-8.6 n the 180 is 7.4-7.8,will he b ok with the diffrence or should i use a buffer of some kind? the ph in all my tanks is very stable.