Using bacteria, fungi and microfauna with orchids

[Carebear2]

I have tried probiotic bacteria and although they are better than no beneficial bacteria they still can't prevent rot completely so are not the best safety net imo and they are expensive. You still need to avoid rot by keeping your growing environment as clean as possible and change media before it goes bad and if you do and thus keep rot away then beneficial bacteria has had no noticeable effect imo.

They certainly don't produce nutrients as you assume Mr FakeName.

Decaying substrate even consumes Nutrients, it does not make them more available. The simple fact is that tap water does contain enough Nutrients to grow Orchids, they need minimal amounts and tap water provides plenty, too much probably even, the biggest problem with tap water is it can cause an imbalance of nutrients, too little N and too much calcium and magnesiuum so adding a fertilizer adjusts the imbalance but the plant does get enough as you have noticed without.

One concern I would have about your experiment is that Bio-Bizz is an organic fertilizer for soil. Soil fertilizer is different to orchid and hydroponic fertilizer in that the Nutrients need to be broken down by soil bacteria to be turned into an absorbable form by the plants. If there is no soil then the nutrients cannot be absorbed and will build up as salt deposits on the roots.

There are thousands of additives to try, I gave up trying more very early on, the best imrovements I got was finding the right ratio of Nutrients, using the right Ph so plants could absorb all Nutrients properly, and feeding the right amount of Nutrients so there wouldn't be salt buildups.
Additives usually just mess things up more than they do good and if you haven't got the base steps I mentioned dialed in properly first there is no point wasting money on additives that in my experience rarely do much good anyway. The plant needs the basic Nutrients it needs, it doesn't need vitamins, boosters, enhancers or other stuff. A bit of sea weed extract is the only additive I use that has delivered good results. Superthrive is good too but it can interfere with flowering