250 watt HPS Scrog Custom Built Cabinet

I've upgraded my box somewhat. I have added a second fan, replaced my custom built CFL fixture with a 250 watt sodium bulb and reflector hood, and added a screen several inches below the light.

I'm growing a single feminized White Castle seed. The seeds came through Nirvana very quickly once again. I must say, it seems to me that those people claiming a bad experience with the company are either making bogus claims on the account of some other seed shop, or were extremely rude in their correspondence.

Dig the pics.

Day 3 from seed.

I like the box. Great custom build. I have a sprout about a week old and some clones around 3 days old that will be going under my. 250 in a couple weeks. I will be following along here. Best of luck

Day 6

Not too hot, not too cold, the porridge is just right.

A little humid isn't it? I don't think its an issue right now but if its like that when its budding I think 51% humidity will give you a chance of mold and that's with the lights on, my highest humidity comes in the night

Here we are at day 8.

Getting bigger and bigger!

Really nice, im using a 250W too..
What u using, a magnetic ballast or electronic?
and what kind of lightbulb?

Medji said:

Really nice, im using a 250W too..
What u using, a magnetic ballast or electronic?
and what kind of lightbulb?

Click to expand...

It turns out that my ballast happens to be of the electronic variety. My light is a 250 HPS manufactured by Custom Automated Products and sold under the brand name MaxLume.

More pictures

Looking great. My lady just hit her 3rd set of nodes, about time to top her. Are you doing any topping here?

Running a lower screen. Dig this thread.

Officially sub'd, anything u wana ask me feel free, i'll do my best to guide u. Set up looks good, so ur off to a good start already man, good luck!

Doing a post now about my training techniques, check my thread in a bit

All up, have a butchers, lemme know what u think.

LST begins.

Yes Joos lookin good, if you can, try and leave a little gap, say like 2-3inches, between the top of the soil and your screen. This is because when she grows and you tuck leaves under, u don't want the leaves lying on top of damp soil (after watering). When she gets much bigger and bushier, you'll need fans that can penetrate her canopy down to the top of the soil, as you need the air under the screen moving, otherwise you're gona have problems. Just something to think about and maybe factor in

lilindian said:

Yes Joos lookin good, if you can, try and leave a little gap, say like 2-3inches, between the top of the soil and your screen. This is because when she grows and you tuck leaves under, u don't want the leaves lying on top of damp soil (after watering). When she gets much bigger and bushier, you'll need fans that can penetrate her canopy down to the top of the soil, as you need the air under the screen moving, otherwise you're gona have problems. Just something to think about and maybe factor in

Click to expand...

I agree, I don't use a screen but I do tie my branches down and have noticed that any of my leaves that touch the soil create mold

LST seems to be going well enough. I cracked a branch, but put it right back in place and I expect it to heal (and form a nice knuckle) within a few days.


I've considered another change to my grow box. Now that I have two fans installed, it has crossed my mind that I could upgrade to a higher wattage bulb if I connect my four inch fan to my hood, which has been designed to receive a four inch flange on any face.

This would leave my more than capable six inch fan to circulate air while the 4 inch fan is pulling directly from the hood.

One thing I wonder, however, is whether my space is too small to justify a larger light, be it a 400w or 600w. Will a more powerful bulb produce a sufficiently positive marginal rate of return relative to the increased cost of purchasing and operating that bulb?

Things are still going well.

However, I did run into something that deserves some consideration. I have a somewhat large pot relative to my plant's previously infant root system. Taking this into account, I was sure to limit the amount of water during the early weeks for obvious reasons. The potential for trouble arose when I inadvertently covered the drain holes on the bottom of my pot in my attempt to bring the plant closer to the light. I haven't had to water my plant in over a week because, with the drain holes essentially sealed from moving air, the water was becoming trapped in the bottom of my pot.

My solution was to dig holes in the soil, around the edge and away from the roots, to drill many more drain holes in the sides as well as bottom of my pot, and to ensure airflow around the holes. I also used my finger to create tunnels at the drain holes with hopes of increasing the exposed surface area of damp soil. The roots don't seems to be damaged as well no smell from the soil and no signs of deteriorating strength from the plant itself. With drying now taking place on the bottom, I anticipate that the roots will chase the water from the pot and be ready for a watering within the next two or three days.

Looking great, with as small as she is you shouldn't have damaged anything with the holes, I line the bottom quarter inch or so with small gravel and use a tray liner under the pot this way there is great airflow no matter what I stack on. Keep up the good work