

Good to know about reusing soil, I always thought it’s wasteful and inconvenient to throw it away and in an actual garden nobody would do that. So I am also definitely going to try reusing soil I use in the pots, just bought a sieve to simplify the process of removing roots etc. from used soil.
Only 5% compost ? I don’t know how dense compost is, but typical suggested DIY mixes use more like 1/4-1/2 compost, by volume.
I was planning to do 1/3 coir for the loose structure, 1/3 of some perlite or similar, to hold water better, and 1/3 compost for initial nutrients, and then see how it behaves and adjust.
Would you recommend to use other proportions? I was going to experiment with the perlite percentage and see how it behaves with respect to watering etc. But with compost I really don’t know how I would even estimate how much I need to add so that a plant has enough “food” from seedling up to the first weeks of growth.
Would adding more compost to the mix simply extend the “nutrient store” for longer? I’ve read that you cannot so easily over-fertilize with compost / organic fertilizers, so I guess it’s then more about price/availability?
Is it cheaper or simpler to have less compost and more of that (I guess solid) slow release fertilizer, is that why 5% is enough?
That does sound very convenient. If I could mix some soil with slow release fertilizer and it would last the whole season, that sounds pretty awesome. I guess it’s released due to repeated watering? Or is it decomposing and releasing at its own pace? Like, do I have to worry about releasing too much if I water too much?
Can you provide a link to your “passive hydro” guide? Sounds very interesting :)
In general I’m interested in learning some non-soil method that is still forgiving, does not need special tech (like pumps and stuff) and ideally not much more maintenance than a soil grow. Maybe I’m asking for something impossible.
Btw, I do have Tropf-Blumat and was going to set it up indoors anyway, to automate and optimize watering. not sure whether it helps for hydro, if you always have to supply nutrients in the water (I would not put nutes into the normal watering tank). I got that, full spectrum lights and ventilation. That’s as “high-tech” as I wanted to get :D
I guess in any case I’m going to try Plagron or Masterblend then, you convinced me! Maybe I should not make my life more difficult than needed when just starting out.
In any case, thanks for the patience with a total newbie :)