Hello wheatgrass of the trays that yeilded 10-12oz.What kind of dirt base did you use?How long did you alow them to grow?Was you growing inside with grow lights,or outside?And was 10oz. the best harvest?I have been growing wheatgass for about 10 months.My best yield indoors under grow lights is 8oz. with 12 days growth.My best yield outside was 22oz. with 24 days growth,in september/perfect growing weather.I am still experaminting with different dirt mixtures.And seed types,higher protien seed.The new seed I got from a texas farmer has been growing well.Higher germination and a more uniform growth.Will be harvesting the first flats today.They are looking much better than the seed I got from wheatgrass kits .com.Also what kind of juicer are you using,I use a greenstar2000.The dirt base im using now is 8cups spagnam peatmoss, 4cups better earth compost, 2cups cotton bur compost ,2cups perlite and a tbls.azomite.