WAter tests perfect, just would like to know how often should I do a water change? I have a 75 gallon with 250 watt MH and 40 watt Atinic and moon lighting. Have done 1/3 water changes once a month is that enough? Thank you in advance for your help.
i do a 10% w/c on mine weekly, for the simple fact it keeps levels undecetable, and replaces all your trace elements without having to dose 1,000,000 different elements...
