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I use a 250W MH lamp and I'll switch to HPS when needed. It's pretty close now - about 6". Two plants which I'll move to 4 gallon fabric pots later. I have a "backup" seedling (4 days younger than the other two) in a small drinking cup. I don't think three plants will fit inside the box, so...

Day 18. Looks like they're recovering. Got two 12V computer fans and made DIY stands for them. They look ridiculous, but they are much less powerful than my 20W oscillating fan, which I'm going to use later. They are loud as hell, though. Should've got bigger and slower ones. Here's a video...

All right, I lowered the light and now it's about 6" from the plants. Also I'll try to gently tie them to sticks or something. The DIY pots do have multiple holes, by the way. I'm not THAT ignorant :) Lesson learned: just put everything under lights as soon as I see the stem sticking out of the...

******* it!

Really? I saw the color and got worried. I'll wait then. Should I filter the water anyway? Does it make a difference?

Not a typo, I was just absent minded when I was converting from Celsius. The lowest temperature is actually about 63F. I did the first pH test. Doesn't look too great. So far I've been using filtered tap water with no additives. The water itself is about 6.5 pH. Should I add some calcium to...

I know, I know. It's just that the box is in a big unheated room and I have to heat it with this (250W version): https://maxgrowshop.com/data/gfx/pictures/medium/1/3/2431_1.jpg Even the smallest heaters consume too much power (1000-2000W), won't fit inside the box and are fire hazard (the box...

Day 10. They seem to be doing fine. The temperature in the box is 32F (lights off) - 75F (lights on). Reminder: the schedule is already 18/6. The oscillating fan I have is too strong, so I'll try to find something less powerful in an attempt to strenghten the stems. I'm seeing some runoff, so I...

They're already under MH, 18/6h. No need to delay the move any longer. I think I'll keep the lamp about 30" above them for the first couple of days and lower it later. Is that OK?

I just moved them to 1L plastic buckets (drilled some holes in the bottoms, of course) which I had handy. I put them pretty deep into the soil. Unfortunately the taproots were already sticking out of the bottoms of the plugs and bending sideways. I put a fan far away from them so that they...

Thanks for the replies, everyone. I'm moving them today!

This is Gorilla Glue in Eazy Plugs, day 8. I water them with a few big drops 3 times a day. No light schedule yet, they're just in my living room. Do they look OK? I want to move them to plastic cups filled with Biobizz Light Mix and under my 250W MH lamp tomorrow or the day after. Supposedly...

I ran a 6h test yesterday. With 250W HPS, the temperature/humidity went from 61F/64% to 70F/68% in about 1,5h and stayed that way until the end. The temperature outside the wardrobe was 60F. So, back to my question: when should I turn on the inline fan? Is it OK if it's on only alongside the...

Damn, that's a lot of replies! I haven't even started germinating my seeds yet. I want to learn all the essential info before starting the grow for good. I've read somewhere that fans should be on 24/7, not just when the lamp is on. Maybe I'm misinformed. The lamp is just 250W. I'm going to...

I just built my first growbox (the usual: 6" intake and outtake holes, cooled hood, ducting etc.). It's 100% concealed and lightproof, but the 6" 36db inline fan is clearly audible and the noise would be suspicious to my guests (I rarely have any, but I don't ANYONE to know about my little...

That's good to hear. I was afraid I'd have to bother with yet another aspect of the whole process. As for the dry runs, I'll do two: one with MH and one with HPS. I'll put a spare phone in front of the thermometer to record it for 24h (12 light/12 dark). I'll share the results here.

I was just about to post a VERY similar thread, but noticed this one. So I'm just going to paste what I wrote below: Am I right to be concerned by temperatures fluctuating between ~54 and 77°F? I have no growing experience. I'm almost done building my first growbox, which is a 21 x 34 x 77"...

Thanks!

Jeeesus Christ. All right, I guess I tried to complicate things for no reason (other than having no experience). Thanks!

According to most guides I should cycle air inside my cabinet every 1-3 minutes. Unfortunately, it's almost impossible to find a timer that can do this. Almost ALL of them are either: digital with only 10 (!) programs per day OR analog with 15 minute intervals. The only one that allegedly can do...