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under the top of the rockwool cube or under the bottom? I always set the top to 1/4" above the waterline. fyi, the picture was immediately after feeding. so the rock wool was wet

Hey all, 12th grow on this indoor Hydroton clay setup. First time with "skunk Berry", 5th crop grown from seed. I was constantly picking up thrips or other pests with local clones, but have had zero infestations since switching to seeds. I cleaned/steralizedf medium as usual, and following...

from seed

Sure. I had limited selection of clone vendors for small operations... 4-6 plants is my range. The retail places were way too expensive...sometimes $25 for a juvi. The one that had strains I wanted was sketchy, and I got the wrong strains multiple times. They'd send nice photos of their...

This is my 7th crop on this ebb&flow hyrdroton system in a 2x4 tray with 240wLED. I switched from clones to seeds a couple crops ago. I purchased a 1/2 dozen Skunk Glue feminized seeds. 2 failed to germinate, and 1 of the 4 took off comparatively quickly, and that one appears to have auto...

oh, how I look forward to your motivating and reassuring messages. Thank you!

Thanks - yeah, I got that. There has been no further leaf issue since I posted this. I don't have pH fluctuation. My plants look fantastic, and appear to be eating just fine. I'm nearing harvest and thrilled with my crop. I doubt that they have been in nutrient lockout, but will run the...

Makes sense. Thanks. In that case, there should be a measurable amount of "consumption" of TDS, assuming you added back the lost volume with distilled water. I'm gonna have to try that. Based on my chart above, and measurements, it seemed that my res was just getting more concentrated...

This makes way more sense. I was estimating and mixing test batches in smaller proportions, but was always an estimate. I just mixed fresh nutes at recommended levels for 25 gals, in 17 gals of water. the result was 698ppm. this has been my experience with GH recommended nutes. Its a...

I havn't used any grow in many weeks. I've never seen TDS drop, and the amount it rises corresponds directly to water loss. Replacing lost water just returns it to original mixed TDS level. I have been hoping to see the plants "suck up nutrients" - and they've been extremely happy, so I...

What is causing the lockout of K? Is it too much FloraBloom? or the other stuff? I am using their feedchart, but have found that the recommended concentrations do not achieve the target TDS levels - even as listed on the same chart. plus, they list 1400ppm at stages. I certainly don't...

Yes - res is covered. It's mostly respiration. I get a bump in humidity after each watering. I'm just curious if plants should ingest a measurable amount of TDS from the nutes (assuming you could account for evaporation and respiration).

Thanks for the feedback - making notes... I didn't use any CalMag this round. My tap is ~180ppm and the plants seemed to be quite happy with the water/nutes... until ~ week 6. So perhaps they need a little bit more later in flower. Will also note reduction in N. I'm curious. I would...

using 500 scale. Target TDS and cutting micro after week 7 are based on recommendation by local experienced growers and the clone provider (based on strains) Here is my TDS history after mixing nutes - 4 weeks veg, then switched to flower: For me, TDS always increases as the water is...

based on the Marijuana Garden Saver, it could be a calcium deficiency. If it doesn't spread and I'm about 2 weeks from harvest... should I let it be?

Greetings - appreciate anyones insight here... just finishing Flowering week 7. I had a few of these splotches on my tallest plant (Sour Diesel) for the last 2 weeks, but just assumed it was light damage. No change until this week, when it appeared on a few stalks of other plants (white...

Thanks - will tighten the PH up!

Greetings, all. Newbie to hydroponics, but not growing. System Indoor, ebb&flow watering: 3x/day Medium: Hydroton clay pebbles Stage: early veg - 2 weeks from planted clones Nutes: GH Micro/Flora & Rapid start Water: using tap @ 180ppm. 6 plants Brief history 4 days in, they all started...