Is this an efficient growth???

seems fine, but change the tin foil. It doesnt reflect efficiently nd insulates heat n keeps it in.

more over I would say - upgrade the hoods a bit. make the wings a bit longer, even using mylar or something. right now they don't do much.
for vegging it seems enough, for flowering... not quite but if you flower real quick it might do.

of course it should be the right color, otherwise its a waste of time and energy

is there no way u can add more lights???
its enough for veg.... but i would recommend atleast another double fixture.... try side lighting and train the plants around the lights

kash959 said:

seems fine, but change the tin foil. It doesnt reflect efficiently nd insulates heat n keeps it in.

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Do they actually still make tin foil in the UK?

In USA, it's pretty much, without a doubt, aluminum foil.

Aluminum (foil) is an excellent reflector. It's an 'insulator' of radiant heat, I suppose(this also means light, 97% or so reflective with IR). Not so much convected heat, and certainly not when it comes to conductivity. Though it has a very low IR emissivity(3%), but this only deals with radiance and not the rapid conductivity and substantial area allowing for convection to also occur rapidly.

When aluminum foils are used for insulation in homes they are most definitely paired with another type of insulation. Usually air and foam/fiberglass(which holds the foil). Air is a perfect insulator almost. Together they form an air/aluminum barrier. Where just enough convection occurs, and substantial solar radiation is reflected, and equally importantly the radiation from inside the home doesn't leave. Giving a cooler home in summer and warmer home in winter. Less radiance in, less radiance out.

All objects that you can visibly see emit all sorts of EM radiation, radiance, and also called light.

It's why when you put your hand close to someone else's hand... or even objects... you feel the 'heat'. This is radiance(and/or convection). Pretty cool, don't you think?

Fame346, welcome to RIU!

Generally you can grow plants up to 6" with 10-25 W/sq ft(or cubic foot) of CFLs quite nicely. Flowering it's good to have 50-100W/cubic foot.

Depending on your seeds, I'd plan to start 3-4x the amount(fem-unfem). So, 6-8 plants, since you're going with two as the goal. If you were planning more I'd suggest just over 2x(unfem). You're taking a huge risk with only two plants unless they're both female clones. Males usually show their balls early. So you'll have nearly double the space within 2-3 weeks of flowering. And gives you more choice selection possibilities.

TeaTreeOil said:

Fame346, welcome to RIU!

Generally you can grow plants up to 6" with 10-25 W/sq ft(or cubic foot) of CFLs quite nicely. Flowering it's good to have 50-100W/cubic foot.

Depending on your seeds, I'd plan to start 3-4x the amount(fem-unfem). So, 6-8 plants, since you're going with two as the goal. If you were planning more I'd suggest just over 2x(unfem). You're taking a huge risk with only two plants unless they're both female clones. Males usually show their balls early. So you'll have nearly double the space within 2-3 weeks of flowering. And gives you more choice selection possibilities.

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I have the widow widow strain, and are feminized. So i wouldnt have to worry.
But do you think my light setup is enough for two plants?I can prob. fit one more fixture in there with high wattage.

134 watts total? Wattage isn't a big deal individually. It's how it all adds up. Most CFLs put out the same radiance per watt.

You seem to have around 2 sq feet. So, with your light, I'd say n(however many fit)x2' plants would be grown quite nicely. Beyond that you'll want more light.