Wow...Thanks everyone....Ummm i dont know what 1020 trays are...
I use just plain trays with 9 cell pots holds 8...and I use the stuff out of those 4 inch pots ,and holders when I pot On...No reinforcing just straddle the space with the trays...I too have everyone save pots ,cells, trays....We just went and got 4 truck loads of 1 gallon to 75 gallon pots that were donated to our fund Raiser perennial plant sale to benitfit the humain society of whitley county...we got to take as many as we could...For future use...they had over 10,000 pots...They used to have hoop houses and grew from seed and such...Not any more and they have all these pots...crazy
I have Petunias ,Lobelia,Coleus,allysum,hollyhock,Hybiscus,snapdragon,phlox,impatiens,Hyacinth bean,pansy`s,Lisiathus,Verbeena,Asters,begonias
I have rearranged an rearranged to get the most flats I could on the shelves....I had just added the top shelf...luckily I had 3 more lights...had to buy the shelf...it seems to bee really efficiant...now