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Pull the plant and check the roots for binding. The main causes of all-over drooping include overwatering, heat stress and root binding.

This part can be a tough call because the leaves won't heal from the damage you're seeing. Even when you fix the problem, the best that will happen is the damage won't progress further. At worst after fixing the problem, affected leaves will continue to get worse until the die and dry up, and...

Yes, they can but there usually has to be male pollen available before any males in the crop open their flowers. Because the preflowers come so early, they aren't usually viable by the time the male flowers open. There are breeders who pollinate preflowers as a way to get only a few seeds from...

It's not a micro deficiency, it's a macrodef. The yellowing is either from N def, P def or both. The necrosis at the leaf tips suggests Phosphorus but the brightness of the yellowing suggests Nitrogen. Try giving them a strong dose of both. Fish Emulsion, some Guanos and Blood Meal are high in...

We're confident that it's not Iron related, but fully agree with JoC's Magnesium suggestion. Mg deficiency can get especially brown & necrotic, as yours appear, when combined with some Phosphorus def. Alternatively, it could just be intense Mg def.

Most if not all pure landrace strains are commonly known of, at least to very experienced growers. Seed companies can't expect strong sales on "old" strains that have been around forever, and so offer newer & more popular strains when adding strains to their inventory. There's also the fact that...

The "easiest" cloning method imo is just using peat or another inert medium and a humidity dome. Types of aero-cloning probably fit more into "faster" methods of cloning but are a little more complicated. We haven't finished this cloning how-to, so it may be a little rough. Start clones under...

No, you don't have to trim any branches when flowering begins.

Potassium deficiency can cause papery leaves.

With soil-type grows, the flushing is best performed as the last watering before harvest. The plants are then harvested at about the time they need to be watered again.

There are videos on youtube showing how to make cooked (black) hash.

GE "Sunshine" fluorescents (5000k) work well for vegging.

Quite a few popular strains started out as unknown crosses, often accidentally. When there is a live plant whose lineage is not known, seeds of that exact cross cannot be created and the only way to get more of that same plant is to clone it. These are clone-only strains. G13 started out as...

A typical 1000w needs to be at least 16" away from the plants at all times and is set to about 19" away each day (provided there's adequate cooling) to provide room for vertical growth. Seedlings & clones are commonly placed twice the distance away when first put under the lamp, so about 3'...

Soft white bulbs have a color temperature of about 2700K and "daylight" bulbs have a color temp of about 6500k. Higher numbers are generally more blue, while lower numbers are usually more red. You can search Google images for a color temperature scale if you want to see. Redder lights are...

A good soil mix won't need anything extra on the surface. We're not entirely sure why you need to re-even the soil after waterings. If the water doesn't soak into the soil well enough, there are a few options. First off, you can spray the surface with a spray bottle before watering to help it...

Original, clone-only G13 has virtually no smell.

We can't say much without pics but you should probably check the soil pH. If you flushed the plants when there was no toxicity any sooner than the last watering before harvest, you flushed too early. Flushing isn't a requirement of growing btw.

Root pruning is required for most mother plants to live a long time in a limited soil area. It's not usually performed on plants to be flowered but can be done to decrease the container size necessary to finish flowering in. Doing so will decrease the amount of roots the plant will have to suck...

With proper cooling, the plants should be at least 10" away from the bulb at all times. No amount of cooling will prevent light burn at shorter distances, though. Setting it to 12-13" each day should provide sufficient room for growth. Any further away than 13" is a waste of the light, as long...