Mysterious Yellow Blotches/Spots (With Pics)

View attachment 1579645View attachment 1579646View attachment 1579647View attachment 1579648I've seen these yellow spots intermittently on my young Aurora Indicas. They have occurred pretty randomly, but mostly on the older and lower leaves, not the new growth fortunately. My best guess right now is hot spots, but I need some help!
I'm using space blanket for reflective covering. It isn't supposed to cause hot-spots from what I've read, so I'm really not sure. Doesn't look like nute burn, but I do give them a decent amount of some generic 8-4-4 fert. They're growin' in 'Royal Gold Basement Mix' soil, under a 400wh MH light.
Can someone point me in the right direction????

doesnt look like nute burn from the soil but i have noticed little burn spots if i drip any nutrient enriched water on the leaves. that might be your problem

That may be it. I 'll have to more careful watering and see if it's remedied.

Yer this is definatly a burn, deep orange rust gold colour, probably from your watering nutrient solution over the leaves. Hot spots is not like this, not so localised, more a small area which is hotter than the rest. If you want to be sure to avoid hotspots then use dimpled or rough surfaced reflective material, if yours says it avoids hot spots then it will most probably do what it says on the tin and avoid hot spots. The space reflective material will probably be of a rough surface but you probably need a microscope to see it. Maybe someone knows how it really works as i'm too busy to google it.

I have to think it's the water, because I've been pouring it with a big jug and splashing the leaves . They're lookin' real nice overall though, if you wanna see the journal it's in my signature

I will have a look at it, i like to slowly introduce the water in to my soil as it can get a little dry, pour few drops on each part then leave 5 mins to soak in, pour a bit more on and leave and so on till the soil is moist otherwise i just get loads of runnoff.

Had a look but could only see pics of your first grow, nice buds on that first plant, if you topped it you would probably yeild more i think but it looked real fine to me. 400mh light for just those three plants is really quite bright, what do you use to flower?

Yep, sounds like a good idea.
Why couldn't you view the new pics?? I've 'fim'ed all three of them now, so hopefully an increase in yield will result, plus a shorting of the plants. And yes the light is very bright in my closed structure around the plants, but that's the idea right?
All I have is this light for the entire grow, because I have no budget(student, no job), and my friend gave me it. It was originally intended to light parking lots or something I think haha. Hopefully the flowering cycle doesn't suffer because of it. What do you think of buying a lower spectrum MH bulb?

Lower spectrum mh bulb? Lower wattage or different spectrum do you mean? Yes the t5s are hot so a little fan and some ventilation wont cost much or blow the budget, how close are they to the plants at the moment? You do want it bright as you can but only to the point where the heat is manageble, my pc fan cost me very little and wired it up to the mains my self with the right voltage adapter. Got some more pics of the t5's and the veg unit you are using?

I mean a lower spectrum, a warmer tone. I don't have t5s? Only the 400w MH. Here's a pic of the enclosure, with the light just above the top of the image . I'll prob need to raise the light soon, they're taller now. Oh, and there is a fan blowing on them

you spilled on 'em-

Warmer spectrum, meaning the red spectrum used for flowering. Yes would be good to mix the spectrum for flowering, red and blue in equal amounts. Would need a hps bulb or somthing like that.