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Yes, you can clean algae from surfaces with bleach. However, you should never allow bleach to come in contact with plants, roots or with plant contact surfaces unless the bleach is rinsed fully from the surfaces before putting them in contact with plants again.

I've been away from commenting on this sort of thing for long enough that I thought it would bear fruit to go looking around to see what I've missed. Strangely enough, nothing's changed in my absence. As regards the Lumatek 400/600 ballast, yes, you can run either wattage HPS lamps off one but...

With a 600, you can do about 3-4 plants per sq ft, up to 3 sq ft. You won't be able to use the whole tray and get good bud density. 9-12 plants, clustered in the middle of the tray is about right. Also, you will want to use a Sea of Green arrangement for best yield. Immediately after your...

The clear goo in the rez is a mass of pythium, usually. 35% H2O2 @ 1.7ml/l is the cure. Dump & clean the rez- wipe down water contact surfaces with full strength H2O2 on a damp sponge- make up new soln, add H2O2 every 3-4 days. You'll never see the goo again if you're diligent. I'm not a...

no wucking furries, mate. :)

Whip out Mr Calculator! The rate is 1ml/L for 50%. 50/29=1.724, so 1.724ml/L. 1.8ml/L is close enough for rock'n'roll. A US gallon is 3.78L. So, 3.78x1.8ml=6.804ml/gallon, 7ml/gal is close enough. Technically, nitrogen itself is an inorganic element. However, the source of this nitrogen...

Yep, I usually do 2 or 3 passes of branch pruning, at the ends of wks 2 & 4, but I keep a sharp eye on 'em and snip any branching that looks like it's going to get long. Branches produce small, leafy buds that are a pain in the ass to manicure, yield very little and take away from the...

Be careful. I don't think I'm quite the deity you make me out to be. I'm neither a chemist nor a botanist. However, I do have a good general science background and a highly developed bullshit detection protocol and can run a grow op. Don't cover the rez, you'll create a moisture trap...

Rapid Rooters are compressed tree bark, an organic material. They have a tendency to fragment after being wetted a few times and bits get loose in the system. This can be hard on pumps as well as makes a general mess. I prefer not to use them. What media will you be putting in the pots under...

cheers, thanks. :)

Yes, it's a bit of work- but I can think of worse punishments than an endless stream of buds, can't you? :D My trays are actually 900mmx900mm, a bit smaller than 4x4, but yes, I do use a pair of 1000s in cooltubes over them. Yep, cut that vegging out and you'll get much...

Why would you want to mix it with coco? Sup? :)

R&D, which around here is also T&E... trial & error. ;) I wound it back until I saw N deficiency then raised the dose about 20%. Holy shit. Well, H2O2 IS used in the manufacture of the explosive TATP... but if you read anything about TATP, you'll find that it's very nasty stuff to try to...

Fytocell is a resin foam material, similar to styrofoam, but doesn't repel water or float the way styro does, although Fytocell does float. It holds a moderate amount of water; much less than rockwool but more than clay pellets. It has a high air content and is difficult to overwater...

Very noice work. :) Neat, tidy setup, looks very easy to work with. Well done. :) One suggestion, tho. You're getting some fairly tall, stretchy plants. Are you vegging before flowering? Kinda looks like it. Downside is that your plants get too tall and the major bud mass isn't contained within...

BTW, something's a bit funky with the theme RIU is using. Post text is all appearing in bold. Kinda messes with my use of bold for emphasis. Links also don't appear in a highlighting colour. I've looked in my profile for theme settings but am not finding anything that can fix these probs...

If you can successfully emulate the calcium hypochlorite processes used in large scale commercial hydroponics & veg production, more power to you. I have no experience with using calcium hypochlorite, so I can't comment. Mind you, the shelf life of high strength (50%) H2O2 is measured in years...

It might be. I have rather high capacity pumps in my system that only take about 3 mins to flood about 1/3 of the way up the pot, about 5-6mins to drain... but that's functionally not a lot different to your situation. Are you using H2O2? Aerating your rez with an air pump & stone? I do use...

I love aeroponics- in theory. In practise, whenever you run a solution with a lot of dissolved salts/minerals through a small orifice, it's going to clog. Aeroponic systems normally require a lot of maintenance, specifically, cleaning sprayers. I have admitted since day 1 on this board that I'm...

Yep, I use ONLY the Canna Vega & Flores A&B, H2O2 @ 1ml/L every 3-4 days and phosphoric acid based pH Down if I top the tanks with plain tapwater. However, I don't usually have to top up the tanks; my 125L tanks are fairly well matched to the water consumption of the plants. This is to say that...