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hi tried looking over the internet but with no help does play sand lower ph levels in your tank i recently replaced my gravel with play sand and a new rock but over the past few days it dropped from 7.5 to 6.0 my first thought was it was the rock so ive removed it done a water change and the...

hi im looking for some colourful rocks for my tank i was looking at Quartz but there really expensive does any one have any ideas :whistle: or to go for pure glass