DRMyc.com - MGP Plus - Growth Promoter for Mushroom Substrates. MGP Increases Colonization Speed, Yields, Fruit Size & Reduces Trich - works with Rye Berries, Millet, Dung Loving Mushrooms (100 Grams)

This stuff really does an amazing job. Follow the directions exactly and you’ll have amazing results.

I've never had a problem with contamination but it does seem to speed up growth. Will definitely be using again.

Props.

I had a pretty bad trichoderma outbreak in my grow space awhile back, and despite multiple deep cleanings, meticulous procedures and running a HEPA filter 24/7, each subsequent grow resulted in a mean green outbreak right around the first flush, crushing yields. I know what I'm doing, and I've been doing it for decades: I culture on agar, my rye grain spawn is super robust, substrates pasteurized per Stamets and spawned 1:3 grain/substrate, no casing - this had been working for years and then all of a sudden it wasn't. I tried autoclaving the substrate and then introducing b. subtilis (a known trich-suppressing microbe) during spawning, but kept getting hit. I was desperate.Got both MGP and Just the Trich, thinking I'd try MGP first and then move on to JTT if that didn't work (the maker says JTT will reduce yields). Followed the MGP instructions to the letter - less is more - and was blown away both by the substrate colonization time (4 days from spawn to ready-for-fruiting), voluminous and even pin set and absolutely no sign of the mean green. I've gone five flushes before the substrate putters out.So thanks, Dr. Myc. I don't know what's in this secret formula exactly; I suspect (based on the scent and the colour of the powder) it's a mix of b. subtilis and some other beneficial bacteria along with a surfactant, but if I purchased those components separately and combined them myself (I priced out this option, BTW) it would still be about the same cost, so why bother? The smallest package will last for a year at least, and it's money well-spent, as it solves two of the most persistent bugaboos of home cultivation: slow, uneven colonization/pinning and trichoderma outbreaks. Essential.

I gave 4 stars because this product eliminates trich. Now I really never got trich but with mutations they can take up to 60 days maybe more. This is the reason I decided to use the No Trich product. Now as far as max yields I myself do not see a difference. If you have mold problems I would try this.

I was skeptical about this stuff, but I did realize how much a small bag of it will really treat. Worth the cost far

This killed all of my mycelium and replaced it with the worst Trichoderma SP I’ve ever encountered. I had to take everything out of my lab, completely sterilize everything and start from new. I lost everything. This happened in a controlled, sterilized lab under completely sterile conditions. This was so badly infected with bad mold spores, I even replaced all my air filters and laminar flow hood filter just to be sure. I ended up spending hundreds of dollars to clean up the damage this garbage caused. DO NOT USE THIS, it’s a scam.

This was my first grow but I had read a few things about this product and thought to give it a try. I am having great successes with it. No contamination, nice big mushroom caps and stalks. You really use a very tiny amount. I added it to my spray bottle for my boxes that need a little more humidity and it’s been wonderful! I will continue to use it!