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More pics with the lights off. The first pic is the mother in soil.

To be honest the Ph has been at 5.4 to 5.8 for the last 2 weeks and it doesn't swing by that much at all. I don't use PH down anymore since i switched to RO water and it only got above 6 when i added PH down. It did go down to 4.8 for a night as i added too much PH down the first time after...

Well i don't bring it back down the pH just stays in the right zone. Sometimes it stays at 5.8 for a couple of days. Then i add RO which bring it up to 6.0. And sometimes when i add a bit of tap water i but a little bit of ph down to 5.5 or so. If i don't do anything it will not raise above 6.2...

Hello everyone, Thank you for reading. I've had yellowing problems starting from the bottom, the plant is growing fine, a little slow but the bottom leaves keep drying and fall off. They start from the tip and edges and turn white to yellow and then brownish color. I had a very hard water...

The tap water has an ec of 0.4 which is 256ppm. So it's not that hard isn't it? Even with going lighter dosage than the schedule the EC keps rising about 0.1 to 0.2 ec a day. Either it was too strong concentration still or the organic nutes were going alive in the raise up to a crazy point...

Ok i will get another buffer. But my pen can only calibrate to one value i guess. At least i can check with the second buffer if it's accurate. My water is hard as hell... But it wasn't an issue until mid flowering. Can you advise me a link or something to a good range of nute? Those were...

Ok. But my ph meter was frequently calibrated at 7 pH. Every time i put the meter in the buffer it would rear 7 pH or 6.9 pH. So it never got out of calibration. Too much nute could have cause the lock out too right? About the lumens it can be reached eventually, but with the leds the PAR...

Thanks for the help. The lights were 90% off on the pics. And strong flash to show the real colors. The thing i don't understand guys is that i can tell you 100% sure that the ph never got out of range. And the EC never rose to crazy levels. I had massive roots like 2ft long getting fully...

I'm in Hydro recirculating in a tank. Should i flush the system with clean pHed water for 24h? Do you mean 1/4 strength nutes or 1/2 strength nut if using B1?

The heat is definitely not an issue. But the leaves are really bleached. I read that it can be caused by photo inhibition. I've left only 1x 240 3w panel for now to see if it makes a difference. The lights were a little higher than 1ft above the plants. If it's a nute lockout what could be...

Could it be photoinhibition? It's about 700w leds above 7 small plants with very little foliage...

What kind of leds were you using? And how high did you raise them?

Thank for the reply. The pen is new. I have been calibrating my ph pen every month. And the pH only drifts 0.1. i've just calibrated it again and it's fine. I can assure you that the pH never ever went above 6.5 and below 5.2 as a record high and record low with this grow. The fertilizer is...

Yes it've seen this but i thought that since i'm using Ph Down which is Phosphoric acid for flowering it would not likely be the case since i'm adding about 5ml a day to bring back the Ph down. Or the Ph would raise even more quickly wouldn't it?

Ok guys. Thanks for the input! I'm looking really carefully after my plants and I raised the EC has the plant grew and it was fine before. I was at 1.5 EC in late veg and now at 1.8 EC with the bloom nutes. I can assure you that my EC never raises above 2.1 and my PH is always kept under...

It's weird the links work on my computer. I've reuploaded them in smaller size. It seems to work. See edited top post. Cheers guys! Also on the pics, i've turned off 2 leds and used strong flash so it looks like with normal light pretty much.

Do you guys think it's normal that they yellow that much as it's flowering and they have no more big fan leaves to dry off? Could it be nute burn? I'm also concerned that the buds look small... Any help would be much appreciated, i've changed many parameters but it didn't do anything... :-(

Hey everyone. i've got some plants of saliva dominant strength and they are a bit over halfway in the flowering stage. It's the 8th week since i switched to 12/12. I switched them early in veg (after 4/5 weeks) as i wanted to keep them short. The leaves have been bleaching for a little while...

ps sorry for the light color, i looked at them with normal light and it looks the same but the green parts are just a bit darker.

Hello, After having done a lot of reading on deficiencies, diagnostics my plants still have the same symptoms. - Light: I have 8 plants under 300w 1w led 20" away. 20/4 timing. - Age: The plants are 3 weeks old from when i put the seeds to germinate straight in rockwool. - Medium: They are...