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- #221
re: Irish Boy's - 480W & 720w Grow LED Hydro - Land Of Clovers
very good point. thanks for sharing this
I would pute the rocks in a bucket of water for a couple of weeks then test the water.Some metals are harmfull to plants.Like if you live by a copper mine maybe not such a good ideal.I think a good stone or bebbles would be any thing from the sea that may have traces of coral and stuff like that.I may even use this over hydroton in my bubblers.But its always best to test first for any palutants or contaminants.My opinion it just gives a little peice of mind.
very good point. thanks for sharing this