Any advice is appreciated. First time trying hydro out. Using RDWC with GH Flora Trio. Added some calmag and Southern Ag Garden Friendly Fungicide. Trying to figure what my leaves are telling me. Is it nutrient burn, nutrient deficiency, light issues, or something else? Was also experiencing some purple in the stems that seemed to have improved somewhat. Not sure if everything is related or if that is a separate issue.
Calmag: 2ml/gal (Went lower than manufacturer recommended because of using tap. Wasn’t sure if I even needed calmag or not but I’m open for opinions. Thought calmag deficiency may have been the issue.)
How much of an airgap do you have under your net pot and the nutrients. And also your ppm is a little low. Id raise it up around 850. Its most likely an underfeeding issue.
Welcome @theguyonthecouch to the forum.
I also use the GH Flora line of nutrients. I would suggest adding GH Diamond Nectar. Helps improve nutrient absorption. Adding soil micronutrients that are only present in soil.
I aim for a 2 inch gap. I am using a 38 L/min 602 g/hr pump to four 2x2 air stones. Four 5 gallon bucket system plus 5 gallon reservoir. About 16 gallons total in the whole system.
I aim for a 2 inch gap. I am using a 38 L/min 602 g/hr pump to four 2x2 air stones. Four 5 gallon bucket system plus 5 gallon reservoir. About 16 gallons total in the whole system. I’m using a 400w led at 23 inches about at the moment. I went beginner friendly and it has veg bloom switches instead of a dimmer. I plan to upgrade the light but at the moment that’s what I have to work with. Reservoir temp is about 68-68 F. I’m running a chiller.
Any recommendation on how much ml per gallon to aim for on each nute or what ratio between them to use when hitting ppm targets? Also, I’ve read when using tap only use Cal Mag until you reach 200 PPM and if your tap is already over 200ppm don’t use Cal Mag. Does that sound accurate?
I mix per the grow schedule and adjust using fresh water to hit the TDS I’m targeting. You can dispense with cal mag if you want but I’d watch for signs of deficiency. I would also suggest adding silica to your mix. Silica is always added first, then cal mag then base nutes. Shoot for 900 ppm.
Add the Diamond Nectar after Silica and CaliMagic. Before base nutrients.
Always finish by balancing pH.
After pH is right add your Beneficial Microbes last.
Another thing I do is freeze a couple 2 liter plastic cola bottles in advance. Then drop one frozen bottle per 5 gallon bucket of water 12 hours before to chill my water to about 62F. That way my water is prepped at 62F before I mix my nutrient. Or even if you aren’t using nutrients.
