Hi organic growers . Last season i tried organic growing as well. I used compost from our household, which was about 5 years old. I used 50% (it was old compost so i figured to put more of it into the mix) of compost and 50% of peat moss than I added one table spoon of dolomit lime per 2 liters of mix and also i have added 20% of vermiculite(i must say this is awesome, a had to water my plants a lot less than others without the vermiculite). THe mix worked great, maybe even better than bought soil, which i used next to this hole for comparison. So my question is: as a natural grower i would like to reuse this soil again and again, and i just have to replace nutritions which my plants has used. My plane is to sieve soil to lose all the rots and than add stuf into mix, but i dont know what should i add?? i was thinking that i would add about 30% of the same compost and probably some more of dolomite lime(probably it is used through grow? or am i wrong??) and maybe some bat guano as well? another possibility i was thinking was to just add old horse manure? please give me some advice or your experiance what is the best solution thx