I use a lot of cloners, what solution are you using?I use room tempature RO water for first couple days, then switch to clone feed. whats your spayer timers set at?first 4 days I leave my spayers running 24/7.
Okay, here's the story: We got a TurboKlone - the 48-site version. Our first attempt with it was sloppy, the cuttings didn't root, and the tank, pump, manifold, and nozzles all got gummed up with algae. So we figured we'd better get rigorous about it.
First we gave everything a good flushing with with tap water to clean the visible algae out, scrubbed out the inside of the unit, and gave the neoprene collars a boiling-water bath. Then we ran a 10% bleach in tapwater (our water's ultra-hard here) solution through for 24 hours to sterilize it. Then we dumped the bleach/tapwater and replaced
it with store-bought RO water (pH 7) to which I added 100ml of 3% hydrogen peroxide, because that's what I had handy. I based the concentration on the recommendation in an article I'd read to use 1ml/gallon (sorry about the mixed units...) of 35% H2O2, and the tank is about 13 litres, so the math works. We ran that for another 24 hours before we made the new cuttings from our fat and happy mothers. We used a sterilized blade to make the cuttings, and immediately immersed them in the clean (bottled) water in order to prevent air embolisms. Each cutting then got a little dip in Wilson Roots IBA rooting gel before insertion into the collar. Then we put the dome on and put the unit directly beneath a pair of 4' 40W Sylvania Gro-Lux tubes. They're T12. Everyone talks about T5. Does it matter?
After a week, we had no new roots whatsoever, so we started to look at the variables. B'cuzz Root Stimulator had been suggested to us, so we added about 12ml as directed. Also, we thought water temperature might be an issue (it's running the basement where the ambient tamp is 60-65F), so we added a heater to the TurboKlone's tank to bring the temp up to 75F. And since everything we've read says that we should be a little on the acidic side, a bit of phosphoric acid was added to bring the pH down into the 6.0-6.5 neighborhood. Finally, we'd been told that the rooting gel is a bad idea when trying to do aeroponic cloning because it clogs the cut stem. We'd actually been concerned that the constant spray would wash it off before it could do its work, but I guess that's not the case. So we added the specified amount of cloner liquid (2ml of a .6% IBA and .1% B1 solution per litre) to the tank and recut the bottoms off of a bunch of the cuttings. Another week's passed, and pretty much everything's dead.
Oh - and I should mention that we're running the lights 18on/6off and the sprayer pump 24x7.
So we could use some guidance. I suspect this last go-round wasn't quite right and that the cuttings were already too compromised by the time we tuned things up and recut them, so we're ready to clean it all out and give it another go. But I don't want to do it until we've gotten opinions from the experienced hands here. The last thing we need is another wasted batch - this is frustrating.