mardi 29 décembre 2015

Green rocks...anybody?

Hi i have 55g tank-new tank.
water parameters are good only phosphate is 0.25ppm.
tank was setup with tap water (4 months old tank)
now i have RO filter and water coming out of filter is 2tds
doing water changes every week 5gallonRO water and +adding about 5gallon RO water every week for evaporation.
about month ago i had brown algae and is almost gone and now i have green stuff on rocks...what is that and why???
anbody???

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