Last year I made a cloning box that was strictly stand alone. Before that, I had a plexiglass box inside my veg chamber. It had gotten to be too much of a drain on my veg cabinet because a few years ago, when my son met the woman that will become his wife this year (I already call her his wife) and I needed to increase my yield by 33%.
The new clone box just what I needed. I used a reflector I had once used in my flower room but created too much heat. I wired up a lamp socket on a conduit box so I could use a CFL bulb. It took a few different bulbs, but I finally settled on a 65W daylight (color: 5000k). Suddenly, my cloning times dropped from 14-18 days to 10-12 days and stayed that way until the flyin’ fuckers showed me just how much they liked helpless cuttings in rockwool and coco plugs. I wasn’t quite surprised by the coco plug attracting them, but I was struck dumb when it turned out the little bastards ate on cuttings in rockwool. But they do. But flyin’ fuckers isn’t the topic, so let me get to the pics of my clone box:
The inside dimensions are 23" wide, 19" deep, and 20" high. The only items I had to buy was the magnetic door latches. Virtually everything else was in my wood pile. I bought the mylar in 2002 (I still have more than half of it left). The 4 mil plastic the floor is covered in was left over from covering my windows for winter. The door was a cabinet door from an entertainment center that no longer could hold my early 90s electronics. I even made the light socket for a different hood more than a dozen years ago.
When I was learning to clone, 99% of the people that posted were saying, “You get the best results using a humidity dome. That said, I don’t use one. I just clip the leaves to reduce the amount of moisture lost during the cloning process”. After reading that, who needed a humidity tent? I did the same thing. My clone area at the time was just the floor of my veg chamber, but it got diffuse light and was below the fan currents. To be fair, I need to mention the floor of that cabinet was leak proof and covered in gravel. I watered the floor every day to keep the humidity up. Besides, I was clipping my leaves…
I was also losing cuttings before they rooted. When they did, it took 2-3 weeks. I finally decided these guys must that say “that said, I don’t use a humidity dome” live in a high humidity environment environment. I’ve had 3 closed in clone chambers since then. Each time, I learned something to use in the next one.
I sometimes put rooted clones in a 6" round by 6" tall pot and I needed me next clone box to be tall enough to accommodate. Also, I’ll put a tall (12-15") clone to clone. This is why it is 20" tall on the inside. Since I kept having a mystery element killing my plants at the end of summer, I frequently cloned or seeded 8 plants at once. The chamber needed to be deep enough to accommodate two seedling mats, side by side. There needed to be a place to feed through electric cords.
Mylar covered surfaces throughout to reduce the lamp watts necessary to clone. It has two 1.75 holes at the top of two opposing walls to provide air circulation. The door needed to be magnetic latched to get it completely out of the way during feeding time and cleaning.
The immediately previous model was all clear plexi-glass with slightly smaller inside dimensions and took up on side of the veg cabinet. It had just 12" total height. As long as the veg chamber wasn’t full, there was plenty of light during those, as yet unidentified times when I was losing productive plants, I’d have both the clone box and the veg cabinet so full that none got enough good light to go around. This clone box provided the solution for all those inconveniences. During one time busy times, I’d lost some many cuttings, that decided not to clip the leaves. I was just fed up with the constant repetition of it. This was still in the plexi-glass box. I just rushed the prep. My clones showed a minimum of 4 days ahead of the ones with clipped leaves. I lost the 3 bottom most leaves. That was nothing new. More leaves tuned yellow and seemed to be dying as well. “Oh”, I thought, this is why you clip the leaves. The roots matured faster than previously before also. I put them into dirt (my substrate of the day). In about three days, all the non-clipped clones looked healthy. the yellowed leaves recovered for the most part and the clipped leaf cuttings hadn’t showed yet.
Those plants showed more rapid growth rate than the clipped leaf plants.
I did the same experiment (deliberately this time) on the next bunch of cuttings and got identical results. I never clipped a leaf on a cutting again. My cloning technique requires excellent humidity retention in the clone box. That’s it. No regular misting or special feed, nothing. These results maybe a fluke do to an environmental condition. It isn’t the clone box itself. The closed one does make a little healthier clones.
That brings us to lighting for clones. In 2001, the advise was "subdued lighting, strong direct light will be too much for your clones. This is why 2 clone areas were low in the veg chamber. Totally unnecessary. When I started using this clone box, I was using a lamp just for cloning with. I put 40W CFL in because the box said “100W equivalent” (huh? No way!) the cuttings still took as long to grow as they did in the clear box. That bulb had been used before and burned out soon. Could have from spray misting near it. I found a 45W daylight photo studio lamp color 5000k. That seemed to really do the trick. My cuttings were healing themselves faster in cloning now. This worked so well, about a month later, I ordered a 65W version of the bulb. The clones responded awesomely! They heal dying leaves quickly with this lamp! I’ve been tempted to try an 85W, but somewhere I need to draw a line on adding more wattage to my grow, so I drew it here. I’ve been using the 65W so long, I’ve needed to replace it once.
My kid and his fiance are moving out this summer (2000 miles away. ), I’ll try the 85W then because their leaving will save me quite a bit of electricity. The kid’s girl seems to really prefer incandescent lighting and leaves them on constantly, 2 less TVs will be on non-stop and the expensive old tech HO fluorescent fixture in the garage will no stay on for 18 hours before I notice it. So, an extra 20W in cloning won’t be a problem.
Ok, one last thing I do that is giving me as low as 5 days to show and now heals dying leaves so well, it gets difficult to tell which ones were injured. I use a product called HydroGuard by Botanicare.This is a beneficial bacteria the eats dead plant matter. I use it at 6ml per gallon for rooting, 4ml/gal for veg and 2ml/gal for all other feed uses.
I’ll dig through my photos and try to find examples of clones going in unclipped and coming out pretty and healthy.