reuse

Hi there, 2.5 years ago I have bought 50 liter "plagron batmix" soil. I have used its half in my first grow and since then the rest has been waiting in my storage room. Room temperature is usually around 25C degrees and humidity level around 10-35%. Do you think this mix is still usable...

I want to know what are the best and cheapest led cobs in Europa and can I reuse my old water cooling system from my old pc?

I was wondering if i could reuse soil, or is the salt build up to high to resuse And if i can how?ps...im using ffof

can you reuse peat pucks from clippings that failed to root if they are dried out or is there a big chance for mold/fungus to grow?

Hi Guys, I'd like to hear your opinion if it is reasonable to reuse the potting soil of a recently harvested plant/bucket? My plan is to cut the whole clump of soil and root into smaller chunks and put everything on the compost for a few weeks. Good idea?