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Btw, you're not wasting any light by going small if the walls of the cabinet are lined with reflective material.

If you don't mind small plants, the smaller the better. The smaller your room is, the cooler and dryer it will run. Just pick a max height of plant and add at least a 12-14" for space between the bulb and the plants (hopefully it will run cool and you won't need that much). Add any height for...

Um, 8 square feet is not a volume, it's an area. If you mean 8 cubic feet, of course it's running cool, you have the same volume as a 6"x20' run of ducting, lol. LOL 8 ft^3, you're cab doesn't need an air cooled hood, it IS one! I mean that is an a tiny space to be growing in, the volume of...

I doubt henry ford was trying to make a disambiguation between diesel and gasoline when he made that statement, i think what the statement is meant to convey is petroleum products. Hybrids still run on gas, or do you know otherwise? Do you know anyone who owns an electric car? Solar...

They would only double in size if you've been vegging for 2 months (2 months veg and 2 months flower. THose plants will likely get to 6-6.5 feet, the light likely won't reach very much of the plant since the canopy will be huge, also you will have problems fitting a light in above it, unless...

You want to keep the mother, if you keep taking clones from clones eventually you'll end up with the multiple assed monkey from south park

Your plants look like babies. Isn't it too soon to flower? They are clones right? You shouldn't water during the dark period. You should bury the top of your rockwool cubes 2 or 3 clay pellets deep. The algae on your cubes should disappear if you do this. Is that the light you are...

So I did some math, and 1tsp/gal vinegar in distilled water will give you a pH of 3.9. Oops. Now mixed 1tsp vinegar in 500mL of water and then took 1tsp/gal of that solution and added it to the water for the plants. Should result in a pH of 5.1

Is this a pH issue? The strain is mango, using 1/4 strength grow solution (400 ppm), and 1 tsp/gal vinegar for pH. 2 plants have these spots. The problem also appeard 10 days in when feeding the plants with pure distilled water. I realize i need to buy a pH tester anyway, but any suggestions?

Yea, lol, that's completely normal, just leave them in the container you have. If you put them in a bigger container the roots will continue south. Next time start in a smaller container.

That's 18 kW*h a day. What's the price of electricity? https://www.rollitup.org/indoor-growing/3284-power-consumption-light-cost.html

You may also want to make sure you have a supplier for 600W mh bulbs in the long term. i don't think they are as common as the 250/400/1000.

Light is everything, 400W is not going to do it for 5 plants. Go 600W definately, and get a cooled reflector and inline fan with the money you saved on the second ballast. Here's a digital s/w ballast: Regular: NEW Digital 600 w HPS hydroponic ballast grow light kit - (eBay.ca item...

this is really cool looking...

Day 52 Flowering Pics...

Lemon makes the water cloudy (and no I'm not talking about pulp, hopefully you're not dropping in copious amounts of pulp), it takes about 3-4 days, but the water gets quite cloudy. Doesn't really strike me as healthy for a plant.

BB, you must've harvested by now. Hopefully you'll have some pics of your progress.

Day 50 Flowering...

Day 50, start of week 8, still 12/12. Switched to distilled water 600 ml every 3 days on day 45.

There are as many grams in a blunt as you want there to be. There are 28 grams in a dry ounce. Can you do the math?