Supersoil recipe

your percentages only add up to about 25%, I use Coir as my base 40-60% sometimes with peat moss, I find peat will acidify the soil over time where as coir does not. I then add in worm castings 10-15% and compost 20-30% to the mix as well as a good amount of perlite and or vermiculite 20-30% Then for amendments I add in a bunch of stuff, Gaia Green/acti-sol as the main bits, then some bokashi grains, shrimp/kelp meals, microbes and a wetting agent Yucca. Can always add in other things as well if you wish, The main thing is not to many amendments for seed starting or it will burn them. save it for transplants or use 20% of the recommended dose, eg if it says 1tbsp per gal for the amendment and your making 2 gal. 1tbsp is 15ml. 20% of 15 is 3ml. 3mlx2 = 6ml of amendments for 2gal of medium. mix it up real nice and bingo banggo done. I always mix my stuff up fully then add in the amendments. if you want you can let it cook for a few months in a black bag in the sun. I don't do this as I lack space but if I had it I would. never mix in more then 10% amendments as it will be to hot. ideal is around 1-5% from what I can tell. or 2-4tbsp per gal of medium as a ruff guide.

Please add some mycorrhyzal especially if your going organic or semi organic(minimum salt nutrient compounds) you do a tea thats what tipped me off. Personally i ad 4-5 parts soil to 1 part composted sheep manure with a blast of mycorrhyzal measured to volume with gaia green all purpose(basically chicken shit and crusher dust) again measured to volume with a hint of epsom salt. Talking to some old timers they thought a grou d up aspirin mixed in can help it works with tomatoes. Its always 3asier to add the tKe away better to be too weak then too hot. Anyways best of luck you got this

You can check out my receipe in my mandarin cookies grow diary - germination week

Mycorrhizae, bone meal, blood meal, perlite, kelp meal, fish bone meal, Wollastonite, worm castings, basalt rock dust, gypsum, yucca, dolomite lime, alfalfa meal and humic acid. This provides a no till base with flexibility for nutrient input based on grower demands from start to finish,Npk, cal, mag and Sulphur, the macros make up 99% of nutrients your plant will use in its life. When applying nitrogen it's vital not to add more than 30% ammoniacal nitrogen, 10-20% is best. Phosphorus is extremely mobile in soil be aware, seedlings thrive in high phosphorous environments early. Have fun.