I have a 5 gallon bucket with a powerhead and a heater to premix water for water changes on my 5.5g nano. now heres the question, the water in the bucket is always cloudy or just ends up with alot of white 'dust' settling on everything (bottom, sides, powerhead, heater) could it be the salt mix im using (kent) or maybe the additives for ph, alkalinity (seachem Reef buffer, and brightwell alkalin 8.3) this 'dust' stuff never seems to dissolve all the way and is starting to piss me off can anyone shed some light on this for me?