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Not even growing right now, but will be setting up soon. Most of what I am sharing is research i did over 30 years ago when working on my Master's in Plant & Soil Science. I will try to collect some illustrations or at least find links to the work of others that have great graphics to...

Root do grow great in hydro but there morphology is distinctly different if you closely inspect side by side with soiless grows s d

While certain stresses may force the plant to create more terpenes and fighting for water may help harden a plant a bit, It is unlikely that the lazy ass plant will under perform the stressed plant as far as total biomass goes. This is not to say that i would no worry if i were going to...

I can see why some people use hydroton instead of perlite. It provides larger macropore space and it stays where you place it, ie. it does not float and it does not crush down into fines like perlite. But it has no capacity to meaningfully wick water upwards through capillarity or adsorption...

Hi again, i chuckle when people manage to overwater in coco and then claim it was because they read somewhere it was impossible to overwater in Coco with out taking into account how large the container is or how small the transplant is. All containers will need less water intially if the...

Great thread here AquaMan and great solid, detailed advice and insights. I found myself watering my 1 gallon coco perlite girls as often as 1x per hour during lights on and i was seeing irreversible damage if i waited 3 or 4 hours. I was mystified by all the reports that people watered as much...

using pot elevators is a great idea where you want to ensure maximum air pruning and never want your roots to touch a dirty common bench. Dr Coco uses a similar double saucer method to catch the leachate in the bottom most saucer just to measure leachate pH and ppms before that waste is drained...

Thanks i will download it

Thank you. Nice thread

Go Go with the 50 50 instead of the 70 30 next time though i find it curious that coco mix was any wetter than the peat mix. Even though peat fibers can be hydrophobic sometimes, their micropore spaces is usually around the same as Coco and tend to be a little more water logged than a coco...

While draining water will draw Oxygen down into the root zone. Watering for the most part drives out oxygen from the macropores and saturates these voids with water. In fact to determine airspace one takes oven dry media in a pot with no drain holes, floods the media to the surface, waits 24...

I read somewhere that capacitance sensors work better than resistance and some recommend painting nail polish along the edges to extend life of sensors which sometimes only last a season. I just bought a Vegtronix which i have yet to try out. It was $114 for the 4 port model i bought

Yes more complete info would be better. Also could you provide the dimensions of your coco slabs and maybe a link to go look at the supplier. Here is what i am suspecting where some of the difference of frequency, duration and volume of watering may be due to the fact you are using short slabs...

Yeah my ppm meters must be 500 because if my ec meter says 1.2 my ppm meters read 600 ppm. I prefer ppm to ec because ppm is used for individual fertlizer elements as well as the total salt load whereas the EC is just really the total Salt electrical conductivity which is useful to know if you...

Cannabis is a C3 plant and not sure the upper limits using Co2 and light but there will certainly be a diminishing return on investment between 1200 and 1500 ppm i would think. I think Bugbee says something similar. No one ever seems to run over 1500 ppm for any crop unless they temporarily...

Yes you want the temperature of the leaf canopy and not the air just under the lights.

I both top water and sub irrigate and fine furry roots always bust out of the bag right at the waterline then grow out and drop into the water where they transform for aerial roots into aqua roots, a bit thicker with fewer root hairs. \ Vapor Pressure Deficit is the difference between the...

excellent documentation!

Tha Thank you, AquaMan posts a lot of solid, detailed info

What is this app and sensor you are using?