How much water will be left that you can't get to? That's usually what I do with my waterfarms...pump the extra out.... and there is always about an inch that is left....I never worry about it. I do use h202 though every other day to fight of pythium, algae etc so that may help keep the older water from causing problems in my setup....just guessing.
Weedhound Reviewed by Weedhound on . First time grow KC Brains Skunk #1 & White KC Hi All This is my first grow seems to be going alright. I did also have some NL during germination & propogation but they all failled to make it to seedlings. WIll have to do a dedicated NL grow with the rest of my seeds as I reckon I know where I made mistakes. These seedlings are about two weeks old and as I say it seems to be going ok but a couple have started to droop a bit since being put in the larger rockwool cubes & te NFT tank. They are under a 250W MH bulb by Solarburst Rating: 5