just to be clear, icelandic tap water is probably the cleanest water you can get :thumbsup: We even have a "joke" about it, where some icelanders sent some water samples out of the country to get it diagnosed, and the reply they got was "Send us your real water, not distilled water!"

Also my brain doesn't understand those big plant growing words too well xD But thank you all for your advices!! :jointsmile:
nalani Reviewed by nalani on . pH in hydroponics (auto-drip coco)??? I recently got my plants a hydroponic system, but keeping the pH level in it at 5.5 - 6.0 is really difficult. The water with nutrients in it is at about 6.8, and then we add "GHE pH down" which lowers it to 5.5 - 6.0. But after a few hours its back to 6.5. Could the problem be that the plants are eating up the nutrients and leaving the pH closer to clean water pH? :P And should i just leave the pH at 6.5 ? Oh btw, plants are just about 10cm tall, growing a bit slow compared to what i'm Rating: 5