@Angry Mexican,
First, I would address the “root rot” issue…
If that’s what it is…
Something is causing this to come back despite the H2O2 and Bleach…
If bleach is speeding it up, then are you sure it’s root rot and not something else?
If anything the bleach should stop the root rot’s growth, allowing new roots to grow.
BTW, are you using straight up Clorox (5.25% sodium hypochlorite) or are you using HTH (56.44% calcium hypochlorite)?
This may be part of your problem.
How long are you retaining your nutrient solution in your DWC and now the “fancy” setup?
Without seeing photos of the roots or having a few more details, it is hard to just say “that’s root rot.”
It’s like looking at yellowing leaves and saying it’s a nitrogen problem, when it could be so many other things.
This could be mold, another fungus (other than pythium), or bacteria.
Certainly adding sugar to the system is only going to feed what is already causing you problems, so I would say stay clear of this until you get the main issue at least under control, otherwise you will keep contaminating future grows.
To answer your question, you can use granulated (or caster) sugar, corn syrup, honey, golden syrup (invert sugar syrup), treacle, whatever sugary syrup you have available.
When it comes to the sugar and honey, I would make a thin syrup with the sugar and boil this for at least 45 minutes to kill anything in it. As far as the honey, I would thin it out and boil it as well, just to ensure there is no mold, or fungus tagging along.
The reason they say to use molasses is because it contains micronutrients.
Honey has micronutrients too, but boiling it for 45 minutes to kill fungus and mold will destroy a lot of these micros, so your cheapest bet is to just use plain granulated sugar.
If your fertilizer has micros, your plants will be fine if you don’t use molasses.
What do you mean by “fancy hydro setup”?
I only glanced over the whole Heisenberg tea thing for a moment and it looks like bullshit…
I keep complete non-circulating systems (Kratky) for clones and small plants nearing transition to grow out (sometimes for months on end) and I don’t have root rot issues.
I currently have a forest of little trees in the non circulating system and they have been in this system since October of last year and they are fine, though they need to be grown out soon…
I do change the contents of the reservoirs often as the plants get older this is because they use the nutrients faster.
Back to the Heisenberg tea thing… You never want to add both mycorrhizae and trichoderma (Botainicare ZHO) at the same time otherwise the mycorrhizae will out compete the trichoderma, but this is for soil, so it’s worthless to hydro…
Both only establish themselves temporarily in hydro so you have keep adding them every few months.
Plus mycorrhizae isn’t going to do anything for your root rot issue, only the trichoderma will.
The major drawback to these products is that they typically have short shelf lives (3-4 months).
Though you can get a palletized trichoderma that if refrigerated will last 12 months.
I recently read a study about research into a few species of freshwater mycorrhizae that seem promising. Once these get established, then this would be the route to take because then you can actually have an established culture.
I am not sure about an aquatic trichoderma….
Hopefully they will find some soon…
As far as the Ancient Forest EWC, wow that is some expensive worm shit at $32 a half cubic foot.
If I were you, I would check craigslist for someone in your area selling red wiggler worms, then I would buy a pound of them, set up a small composter (a couple of Rubbermaid totes) and feed the worms your kitchen scraps. Then you will have more worm shit than you can shake a stick at…
In my area (which is not a huge area), red wigglers are going for $20 a pound off Craigslist.
Here’s a crazy idea, during all of this have you been using the same pump?
Does this pump have a one-way valve on it?
Is the pump elevated above the system and not sitting on the floor?
The reason I ask is because the pump may have backwashed some of the nutrient solution into it’s diaphragm and every time it pumps it is just pumping spores of mold into your system.
Changing the pump could solve all your problems…
I hope some of what I wrote was helpful.