Electrolights
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generally speaking yes, you should be able to flush till the runoff is the same as the res. I wouldnt go too crazy though. I dont actually check my runoff ec, jusy my res. And I usually go off of PPM instead of ec. In veg I keep the res at 600-800ppm then 1000-1300ppm in flower. With how often you water, especially in veg, your root zone ec should be fairly stable because the rockwool is completely inert, it doesnt hold nutes at all.@rDWCNoob so in theory if my rockwool ec itself is too high I can just keep feeding causing runoff till desired ec? Won’t post pics till they’re healthy lookin lol sitting at 2.0 right now even though I caused some runoff with .5 ec it’s steady 2.0 assuming some nutes from original soak are still hangin in
So I ended up panicking with my ocd and found a way to dry them out because I weighed them and they were all close to the 3000gram range which is fairly close to the 108oz max volume of the cube, now they’re sitting at 50% starting the feed for the day and the two that are 1-2 weeks older are standing up and looking alright now, was totally water logging them from the original soak but I can’t figure out now why this sensor was just reading it was at 40% but a few hundred grams heavier than the two that are on the sides could just be that it’s a little younger so it’s taking more time to recover then overnight like the other two, I stacked the cubes on top of dry ones to pull the water out via gravity and it actually dropped them from 80% all the way down to 40-45 overnight, they’re on the clone trays because I felt they’re getting bad drainage since they were so water logged. What a damn learning curve
I have tip burn from 2.0 I’m down at 1.3-1.5Yes, stacking them will definitely drain the top one. Ive made that mistake when stacking a 4" cube on an 8" one. 8" just sucks the smaller one dry. Its because the rockwool acts as one solid cube, and the cubes have a water gradient, so the bottom is always wetter, while the top is drier.
Dont worry about over watering. The thing with over watering is that youre not giving the plant too much water, its too little O2. Like DWC, the roots can be completely submerged, so long as theres enough O2. The cool thing about rockwool as I said before, is that even when fully saturated, theres still around 15% air in the root zone. And, the way to give the plant more O2 in rockwool? Give it more water. It sounds counter intuitive, and if youve tried soil or coco, you need to unlearn some of the normal watering methods. Rockwool is different.
You can feed one of those 6 inch cubes, 2 litres of water, 5 times a day, and it will be perfectly fine. Every single time you water, once the runoff stops, your cube is at the perfect O2 level. It never geys any lower. If anything, not watering enough could cause the O2 to become depleted, not the other way around. Its the exact opposite of soil.
Looking at your plants it looks like youre still in seedling stage, but at this point theyve got some roots. So I think you could probably start watering with normal veg strength nutes or close to it. That should darken up your plants a bit and give it what it needs to enter full veg.
Just something off Amazon in a 5g bucket got a 120 mesh on the end of line before the emitters had a cheap vivosun one before and didn’t think it was strong enoughNice setup. What pump are you using in your rez?
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