The only thing 'bad' about bottled water is that it does not have many of the chemicals and micronutrients that tap and/or well water does. If you used it only to buffer your rockwool, you should not see any problems.
gainesvillegreen Reviewed by gainesvillegreen on . Few DWC questions. For my first grow, i'm just learning with a simple DWC system, I just have a few questions before I go ahead and start her up. When I was reading, there was a few things I couldnt find in plane english. Im using rockwool in clay rocks, suspended over my reservoir, my questions are: How far below the rockwool do I have my nurtient soloution? Mines not self draining.... so how often should I completely flush/change/clear out the nutrient soloution? Sorry if these are stupids Rating: 5