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Pentane is tough to get. My only experience with pentane was when I worked in reseach.

Yes, azeotropes at 34C Watch with pentane that you get decent purity or distill it before. Pentane can have traces of plasticizers and other higher boiling point impurities. The only reason I use butane and ethanol is that it is easy to get high purity.

Noticed the other plant (diff strain) having problem too. Is this potassium deficiency?

Sorry was clear see above post

So things have changed and not sure if too much or too little nutrients. So my solution has cal mag in it and by the time my water is factored in Iam at 200ppm. I added some nutrients (12:34:12) to bring the ppm to about 450 and adjusted pH. I don't know if I have a deficiency or excess...

Seems to be making a difference. I used a little Borax (pH adjusted the sodium salt) with Cal-Mag a little nutrients. Plant slowly recovering. I think I may have had a pH issue before as well. I dropped the pH of my watering solution down to get it in range.

Cool started to drip the mix in. Cal-Mag, light nutes, borax, adjusted to pH 6ish. Hopefully gets the plant back. Will keep posted

Forgot the photo. I think the plant is start to look better.

How What dosage do you use to treat Boron deficiency?

Thanks for the advice (all round). She was definitely thirsty so tho watering solved most of the problem. I decided to take a shot and go with stop feeding. It has the least potential to harm the plants. So I gave the plants a good water and switched my blumat reservoir to straight water with...

Thanks. Heat stress not likely as my temp are 21C. Checked underneath for mites. I have empty traps for fungus gnats. By nute issue do you mean excess or deficient in nutes?

So after struggling past an issue of deficiency I am not 100% sure of the cause of the issue that I am seeing. I have noticed twice that I have drooping leaves. I know that it is not overwatering as I add water (no nutes) and the drooping goes away. The question I have is whether drooping can...

Bumped it up to 480ppm through my drip feed. Plants really thriving. I think Ill hold it at 480ppm for while to make sure I dont burn the plants.

Curious what vacuum pump you used. Thinking of giving it a shot myself.

Well the plants recovered nicely. Been drip feeding at 200ppm and the plants growing very strong. Will ramp up concentration up cautiously

I am on my second grow now moving into flowering stage. Does regular light pruning (light =~5leaves) to improve air flow and remove unhealthy leaves impede growth or stress the plant?

Temperature may have been your issue here. I do extractions using dry trim. I blast into round bottom flasks and let the butane evaporate. You should not need to heat the oil to remove the butane. I blast 300mL butane into roundbottom flask. I add a few mL ethanol (Everclear 190 proof). I let...

Extracting with butane is safe when done safely. Always extract outside Place a fan 10ft away blowing on where you are working (this reduces risk air:fuel mix will be in danger zone) Use an extraction column that you do not need to hold and Do not heat the butane except with warm water No...

Lol cant help myself. Made two batches of Dewaxed BHO for vaping. Fantastic taste and very potent. I kept the best buds to cure. I have enough supply now to allow the curing buds to age without interuption.

Originally I did not feed them. Was banking on the potting mix getting them through the first few weeks. Now Iam going to feed them using my blumat tropf which is a continuous drip. Checked on plants this morning and the most effected plant seems to be doing better. Yesterday the leaves were...