Ridiculous cloning inconsistency please help
Hi guys, wondering if you have any hunches about this:
When trying to clone basil, 7 cutlings were placed in the same system - 2 parallel PVC tubes with deep water oxygenation and recirculation. Both tubes have the same main tank, flow rate, water level, lighting, pH and nutrient level, but plants rooted in one tube and rotted in another tube.
The tube in the back cloned star-anise basil with a massive roots system, equally for 4 plants, in only 5 days, while the tube in the front had NO roots and 3 wilting plants.
Any idea what could cause this kind of inhibition and inconsistency? The only difference I surmise is that the plants in the rotting tube are down-steam of jasmine, another star-anise basil, and some beets, which maybe somehow absorbed all the oxygen before it reaches the sproutlings? If this were true though, I would have a bad time growing the other plants that are downstream but doing well. Any ideas? Is there such a thing as a cheap dissolved oxygen meter?