Hi all. I am in my 2nd hydro grow. I have grown with soil for years, but have decieded to give hydro a try. I got one of the bubbleponics setups from stealth hydro and I am using 1-600w hps light and 1-20w florecent light. (I know I should have built the container myself, but I am rather lazy) I grew 4 plants with bcuzz nuts about 6 months ago, and they turned out ok. (my setup holds 6 plants). Now I am in my 2nd grow, and this setup is kind of a mix between and drip system and a dwc system. I am growing in hydroton and 1in rockwool cubes. The plants are 3 weeks old now and seem to have stopped growing. I have been leaving the drip on 24/7 and lights on 18/6. So my first quesion is: I figure that is too much watering. Is that correct? I also noticed on the rock wool that there are small white dots everywhere. I'll try to post some pictures later. I am currently using the pre-measured nuts from stealth hydro, and my plants leaves are currling upward (down by the stems), and turning yellow in the ends. (any advise would be helpfull).
tried 24-7 with mine at first, but they got well too soggy. Changed to a timer that feeds 10 seconds every minute & it's spot on. U need time for the growmedia to drain off or the plants will drown & rockwool will go mouldy. (like yours is) - Move the drippers off the rockwool & have them drip into the clays instead so the roots have to search out feed & let the stems dry off. u don't mention ph & ec / ppm - have u checked these at all? Have u got calibrated meters? How often do u change solution & what feed are u on? Apart from the over wetness of the rockwool, it's more than likely that ur problems are caused by too high ph
Thanks, the PH is currently at 6.1 and around 300ppm. I have a good disolved solids meter, and I'm just using ph test strips. I change the solution every 3 weeks, and I actually dont know what feed I'm using now. It is from stealth hydro, and comes in pre-measured (supposed to be ph blanced packs) I just use 1 pack of "grow" nuts, and 1 pack of micro per 23 liters of water, and I am using 3/4 of a pack per 23 liters of water. Yesterday, I drained 5 liters out and flushed the plants with 5 liters of distilled water with a ph of 6.0. I also got a timer that allows me to turn the pump off and on every half an hour. So I set it to water / feed for 30 min every 2 hours. I'll post what effect this has and pic's later today.