well seems like everything going alright.. apart from what seems to be fertilizer burns on one of the plants.. maybe PH? (i dont have the means to test it) but then again looks like the other two are doing alright..
strung up the HPS
do you reckon its too close? (its 400w) ALSO is it alright to use for vegging cause its orangey?
cheers!
MH is better to use for veg, but there's no problem using an HPS.
Well the light is pretty close. There are 2 things to check to see. First do the hand test. Put your hand right at the top of your leaves and leave it there for 20 to 30 seconds. If it's comfortable for your hand, then it's ok.
2nd is the heat. You have to get a thermometer and put it right on the edge of the planters, you know lay it down on the tops of the planter edges. You want to try to keep the temp between 72 and 80, but you should be OK up to 85 or so.
And the plants are going to grow, so at some point you're going to have to move it because you have no way to raise it. You can move it to a part of the attic higher in the pitch where the roof is farther above the plants. If not then you can mount the light sideways, make a bracket of some kind using spare wood, and use it like a spotlight from the side of the plants if you know what I mean. Just keep spinning the plants daily so they don't start growing sideways.
As far as the yellow leaves with spots, it can be a mg burn caused by that Miracle Grow Dirt & it could be a N or K deficiency probably caused by a pH lockout. Either way you're going to need to flush and you're going to need to buy an aquarium pH test kit.
The test kits aren't expensive, they're under $10 so they're well worth it. You want it to be between 6.3 & 6.5. When you test the water you're using, if it's a long way outside of that, you have to change it a little at a time. In other words if it's an 8, pH the water at 7.7 the next watering, 7.4 the following watering, etc.... If you change it too rapidly you end up with pH fluctuation, check the leaf in the pic.
Once you get it in the right range you'll have to flush the soil. If it was the Miracle Grow soil, then you need to flush those nutes out off all 3 pots. If it's a pH lockout, then the lockout has caused salts to build up which you need to flush out, and you'll want to flush all 3 either way.
To flush you'll need to use 3 gallons of water for each gallon of soil and you need to adjust the pH in the water that you use. Just put the plant in the tub and pour the water in one gallon after the other, let the plant drain for a while (till it stops dripping when you pick it up) then even out the soil and put it back. You're soil will then be salt & nute free (almost anyway) so don't be surprised if your plants start asking for nutes in a few days or a few weeks (hard to tell exactly).
Either problem is serious and can kill your plants. Here's a link to look up plant problems, save it to your favorites, you'll be referring to it time & time again.
http://www.ganjaguerrilla.net/index.htm
Also, if you're using tap water you need to let it sit out for 24 hrs in an open container. If you haven't been doing that, you really need to start. This gets rid of the chlorine which isn't good for the plants when there's too much, and anything more than 0.1% is too much.
Nice light by the way, that should kick the growth into overdrive. Just make sure you don't over due it. There are examples of heat & light burn/stress on that link. You should take a quick look so you know what it looks like so you can identify it right away if it happens.
Other than that, your plants look good. You've been doing a great job. Most people have problems long before now.
Cheers M8, hope you and yours had a nice holiday.