Just switched all my starting seeds from rockwool to coco coir. I have no damn luck with the rockwool, only about 1 in 4 of my seeds are coming up. And some that do come up can't push through the rockwool, its too hard. So I've had some weird shit like the root come up instead of the seed, or the root twists into a pigtail.
Went to Lowes this afternoon, 27 gallon store brand black totes with yellow lids for $12. I bought 6. My plan is to use the totes for stuff like lettuce, peppers, etc. 5 gallon buckets for tomatoes, and then 30 gallon drums for my cucumbers and melons.