Cloning and seedling chamber with CFL lighting

Srirachi

Well-Known Member
I thought I'd share my seedling and cloning chambers.

I am a tinkerer and build stuff all the time - not birdhouses, machines. So I've got a lot of weird scrap in my garage. One of the things I had was some old screen printing frames that the local scrap guy thought I'd pay more for than the scrap aluminum weight. He was right because they are basically square aluminum frames - like tinker toys for me. You can buy the frames brand new for around $8, you'll need 4. You can probably get a friend who works in screen printing to get you some from work. And with the frames and no welding skills you can make a chamber that is rock solid. Probably around $50 worth of stuff but I bet you can get most of it for free if you look around a little.

The first cloning chamber I made was made using the scrap frames but I found I needed more and I found a cheap source for the frames. Gold up USA is the seller you should google, then look for "bare frames" and pick a size. Use bolts to hold everything together.

The beauty of these frames is that you can slap 4 together with some melamine board for walls and drywall screws will bore right into the aluminum without any drilling or anything. You will only need to drill for the bolts to hold the frames together.

I cut some foam insulation to fit inside the frames. I used melamine for walls as well but you could easily get by with just reflective foam for walls and it wouldn't weigh as much as a dresser then like mine does. I used old light fixtures for light but if I had to buy lighting for it I'd have bought one of those hip happenin HLG 304s for it.

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With 4x23w CFLs the plants get plenty of light, not too much heat, and are generally happy. The plants in the last shot were grown from seed in that box. I have a problem keeping temps up but you could easily install a couple computer fans or something if heat is an issue where you're at.

Nothing revolutionary here except that it was fast to make, like an hour, and built entirely from garbage. I think it would be worth ordering the frames new though, because this chamber is strong enough to be the base for more of your operation to be set on top of. You could build one wider or taller from these frames as well, so I've been buying them for all sorts of stuff.

You could also order a 160 mesh screen at the same time and rub out some nice pollen.
 
My other chamber is built from 10mm Coroplast which is something sign makers use so you can get it from a sign shop. It's like the stuff they use for yard signs, but that is 3mm. It's too flimsy. 10mm is what you want and a lot of shops will not have it in stock but you can buy a 4'x8' sheet. However the point of this post is to show how I joined all the pieces in case you're not familiar with the method.

T-NUTS or BARREL NUTS - the greatest invention since sliced bread.

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What these do is allow you to drill 2 holes in 2 pieces of wood etc and join them with a butt joint. Normally a butt joint is the weakest and least desirable joint in carpentry but T-nuts change this and make it a viable way to join boards etc.

They also make it completely unnecessary to have perfect cuts. Close is close enough because this construction technique is very forgiving.

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Here's an example of T-nuts being used to join boards together at right angles on my home built CNC router. The machine is made completely of MDF and T bolt joints and is extremely rigid.

To use a T-nut, you drill into the edge of one board then drill through that hole at a right angle to make a T shaped cavity. The T-nut slides into the horizontal hole and the bolt comes in through the edge hole. The bolt and nut allow you to tighten things down hard and makes a strong joint.

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Using T-nuts and MDF you can build any growing chamber you need and as I've done here, you can even build out of stuff that normally wouldn't work well. This was just a post to give you some ideas, Instructables dot com has a gripload more on building with T-nuts etc.

In case you want to see it here's the new chamber I made this way.

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My other chamber is built from 10mm Coroplast which is something sign makers use so you can get it from a sign shop. It's like the stuff they use for yard signs, but that is 3mm. It's too flimsy. 10mm is what you want and a lot of shops will not have it in stock but you can buy a 4'x8' sheet. However the point of this post is to show how I joined all the pieces in case you're not familiar with the method.

T-NUTS or BARREL NUTS - the greatest invention since sliced bread.

View attachment 4161452

What these do is allow you to drill 2 holes in 2 pieces of wood etc and join them with a butt joint. Normally a butt joint is the weakest and least desirable joint in carpentry but T-nuts change this and make it a viable way to join boards etc.

They also make it completely unnecessary to have perfect cuts. Close is close enough because this construction technique is very forgiving.

View attachment 4161462
Here's an example of T-nuts being used to join boards together at right angles on my home built CNC router. The machine is made completely of MDF and T bolt joints and is extremely rigid.

To use a T-nut, you drill into the edge of one board then drill through that hole at a right angle to make a T shaped cavity. The T-nut slides into the horizontal hole and the bolt comes in through the edge hole. The bolt and nut allow you to tighten things down hard and makes a strong joint.

View attachment 4161468 View attachment 4161469

Using T-nuts and MDF you can build any growing chamber you need and as I've done here, you can even build out of stuff that normally wouldn't work well. This was just a post to give you some ideas, Instructables dot com has a gripload more on building with T-nuts etc.

In case you want to see it here's the new chamber I made this way.

View attachment 4161480
Siracha this came right on time as I am elbow deep in trying to get a small seedling box built from card oars boxes I have a few CFO bulbs and some window reflectors.

How close did you keep the lights to the first plant? The one in the clear solo cup? My seedlings are stretching like pulled out slinkies and I'm afraid of them butting the light while I'm at work end cooking.

What light is in this veg pic?
 
Siracha this came right on time as I am elbow deep in trying to get a small seedling box built from card oars boxes I have a few CFO bulbs and some window reflectors.

How close did you keep the lights to the first plant? The one in the clear solo cup? My seedlings are stretching like pulled out slinkies and I'm afraid of them butting the light while I'm at work end cooking.

What light is in this veg pic?

I'm using 4, 100W equivalent CFLs - 23W spring bulbs. 2 @ 2700k 2@ 3500k. They grow somewhat slowly, but that's ok with me, I just start seed earlier than a lot of people. The lights get within about 4 inches of the plants with no issues.


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Total noob question I know... but what do you do for flowering cycle?
I'm assuming you transfer those little ladies into a flower setup? Do you have pics/specs?
 
hi Boomer - I have a 4 x 4 room set up for flowering. I used to use a 400w MH and a 600w HPS but just switched to 2, 315w CMH. Prior to that though I had a 2 x 3.5 cabinet with a 600w HPS. Nothing fancy, just built it from scrap wood and used a cool tube to keep the temps within reason. In the shorter height of the cabinet I scrogged a pair of plants and stretched them the length of the cabinet. It's a fantastic technique for tight spaces.

First pic is of the cabinet being built; second is to show that it worked!

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