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Na-sayer? As in Na=sodium? Very punny. ;) Thanks for the supportive message, but I'm not here for one-upmanship. I have no emotional connection to being right or having 'mad skillz'- and you will find me taking the piss out of anyone with that mindset in a satirical bit I once wrote called...

Mites are not pathogens. H2O2 is not an insecticide and will not kill mites. Yes. No. H2O2 breaks down into 2H2O + O on contact with pathogens and is thus neutralised. Spores of pathogens like pythium & fusarium are ubiquitous and will recolonise the nutrient solution, requiring...

You might try running the pump 15min on/ 15 min off & make sure stem tips are not dipping in the water. Use 50% grade H2O2 at 1ml/L of tank volume (or 1.7ml/L if 29-30% H2O2) every 3-4 days. If the tips are squishy, they've rotted from too much water/too little oxygen. If the cuttings are not...

Reaching a bit, aren't we? You can put all the sodium stannate you like on your plants- no skin off my nose. Everyone else is forewarned.

Yep. Sodium hypochlorite is not a good steriliser for hydroponics. Only in emergencies and only in REALLY low doses can you get away with it.

There is no benefit in using H2O2 in a foliar spray. It's an antimicrobial which gives off oxygen when it breaks down in contact with microbes. Leaves have no interest in oxygen- that's their waste product. It also evaporates readily, making it not well suited to mould & mildew control on...

The main stabiliser used in low-strengh H2O2 is sodium stannate, which is toxic to plants. Even without stablisers, it is uneconomical to use 3% due to the quantities required (around 17ml/L) for adequate solution sterilisation.

:oops: *blush* Thanks for the thanks. Hope it goes swimmingly for you!

The cubes can be packed right up against one another. In fact, that will improve heat retention in the cubes from your heat mat. That's how I place them in my clonebox. You'll be able to fit 150 40x40mm cubes in 600mm x 400mm. Only if you're using clay pellets do you need to flood up to the...

No worries- you're OK. I'll respond when I have time to do so. If I don't reply immediately, presume I'm working in my own op! My trays are actually 900mm x 900mm (2.95 feet ^2 = 8.75 sq ft) & have 24 plants in each = ~2.7 plants sq ft. Aero is fine but you will find that it's difficult or...

Happy to help! :) Because winter's coming up for you, I would initially use the AAWs, without cooltubes and with a magnetic ballast located outside the room airmass. Add the cooltubes as soon as you are financially able, but before May if you can. Doing cooltubes right entails sourcing &...

Thanks. I drop in when I can. I'll pass your regards on to Stoney. ;) Hope it works out for you. However, until the federal laws on cannabis are reformed, state laws permitting MMJ use are not a safe haven. The DEA will bust you & laugh at your state laws. Consequently, even...

90cm is 900mm, nearly 1m! That's a pretty deep flood you're wanting there, mate. ;) It's really only necessary to flood to about 25-50mm (2.5-5cm) deep. Your media will wick nute soln up to the roots of small plants with no problem. 170mm (not cm!)dia pots are fine. I use 175mm dia pots. Try...

Yep. Yep. Nope, they're about the same in terms of light lost through the glass. Cooltubes with AAWs will spread light more evenly over a recutangular area, though. You might opt for the medium sized AAWs in your case. Pretty small room. You could fit 2 900x900mm trays in there under 2x...

Filtration will have no effect on humidity. Mould spores will get through all but HEPA quality filtration. However, a layer of old pantyhose material stretched over the air intake will help keep bugs out of your op. It's difficult to prevent light from escaping your air intake, so I'd be...

Just a small note about economy & value: Growing dope indoors with hydroponics will cost you some money. An op like mine would cost about $4-5000 to set up and I bet I dump about $700/mo into it, considering electricity & all consumables. It outputs about 18-20oz/mo, more or less. I do like...

There's probably an entire subforum somewhere on RIU devoted to guerrilla growing with auto strains. They're roughly 700mm above the trays, but my lights are hung with yo-yos, so I can adjust the clearance whenever it suits me. Usually about 200mm above the tops. When you consider the...

The reflectors supplied with cooltubes are generally poor compared to the Adjust-A-Wings double parabola 'batwing' design. This is why I married some cooltubes to some Adjusta-A-Wings Large Avengers: OK Ventilated hoods of the sort you have generally have poor light spread and are...

Throw the reflectors included with cooltubes in the bin & hang the 'tubes under some Adjust-A-Wings batwing reflectors.

Well, a long night (or even a couple days of total darkness) in flowering is a lot less sinful than a long day or interrupted dark cycle. The former will reduce yield slightly while the latter can induce hermaphrodism and make a general fucking mess of things. Pollinated seed bracts die back &...