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I don't mean to b e a dick but I think you mean High Intensity Discharge - as in HID lamps like Metal Halide and High Pressure Sodium? These are great if space and heat removal are no issue to you. They are expensive to run but they are also the proven norm for indoor growing. Save up money...

Hey PSUAGRO, I can't help but notice 61.5 Lm/W... That is pretty poor even compared to CFL. Also 3000k should be yellow rather than "Bright white". Considering all of that these lamps are bastard expensive and seemingly not so efficient. Was Chronicool the one that grew a low wattage plant using...

Thanks Hotrod, thanks Sticky! I have just changed the res to Bloom nutes as said above. PH is currently 6.0 (dammit - missed by a whisker) so I'll let them settle for a few hours and then try adding a little PH down. I don't suppose that there is a "best practice" way to add PH down to a res is...

Hi all, my first grovel for advice for my first grow: So I have 4 Afghan Kush Ryders in a little NFT setup and 3 of the four plants are doing fine. One however is showing some serious issues and has pretty much lost 2 leaves to spots. All of these plants displayed red stems and all of those...

My thoughts exactly, I'll start messing around with timers once my jars are full from my first grow (Ok my second, I'm bound to fuck up somewhere) If we are doing these then I'd like to also apply P.P.P.P.P.P.P. (AKA "All the P's") "Proper planning and preparation prevents piss poor...

Honestly if SS1 says so then I'm going with him - this person can grow and is one of the few with a full NFT system on show! Just a shame I don't seem to be able to find a suitable timer for the pump D: plenty of time for that and I'll have to get through mauling my first grow anyways.

Also rootin for ya - Machine is switched to Power mode:

Hi, have a look on YouTube, search out some grows with LED and you will get a better perspective. That thing may produce as many lumens as a single 3watt Cree LED but I doubt it.

Television is the "adjuster" but not just advertising, look at the news for example. When was the last time you saw a news broadcast that gave you enough information to actually understand something instead of giving you just enough information to form an opinion? I often wonder if the...

You need the water on always. There are two schools: A) You switch it on and you are done B) You spend $$ on a controller that runs on for 1 minute off for 2 (or 5-15, 2-4,6-9, 1.8-2.3, etc etc) With A you are reliant on your pumps quality. With B you are reliant on your pumps quality when it is...

Hi, in my test I did run one of the warm whites straight off the 12v supply and i seemed fine, the chips are actually 9 led in a little matrix: You can clearly see each diode in the group, the 10w ones have 9 and the 20w one has 20. I have 4 of the CC devices on order, once I get through...

http://www.youtube.com/watch?v=zUTswEPcbGg "Keep em dancing" - I thought I'd get away with no fan from week 1 to 2 but no! If you keep your ladies dancing they will grow up strong and healthy.

Hi there, I came accross this vid: http://www.youtube.com/watch?v=09dTZn43ziY The thread is here - https://www.rollitup.org/led-other-lighting/554037-336x-pro-new-led-user.html I was so surprised at the difference in output of these two lights that I had to ask and Greenskrillex came back with...

Hi all, I bought a GT205 and having set it up I notice that the silver lid is in fact translucent. Now I bought this with the expectation that it works and I am guessing that it will because it has been designed to grow plants in (duh). I don't know enough to call a hydroponics manufacturer...

Thanks Guod, and thanks Tenthirty! Hows this for a plan, if I run the lower voltage ones on the CC pcb and then (because you have to have some resistance in the circuit) I run the 12v whites from 0.1ohm resistors? I noticed during my somewhat shoddy test of the resistors that the lower one I...

Sorry I need to get more pro with my words, a 250w, DC, 12v & 21a LED Water resistant switching power supply box - and I'll run 2 LED per PCB (with heatsinks) so the load will be 8-12v and 2a per unit, all powered off the switching power supply (clearly NOT a transformer then). The supply is...

Either a shameless plug or an attempt to be helpful - even I don't know. https://www.rollitup.org/led-other-lighting/562946-my-research-into-light-led.html

Hehe that ones easy, I bought a 250W (12v @ ~21A) transformer for like 40 bucks (or rather ordered, not arrived yet dammit) back when I had convinced myself that it would work with resistors only (It won't) That should do a sweet job of powering all these AND I get the extra protection on my...

Hi all, thanks for the replies! I may actually be getting a half an understanding! I've looked through and costed up some components to make this: http://www.instructables.com/id/Circuits-for-using-High-Power-LED-s/step6/The-new-stuff-Constant-Current-Source-1/ (Many many thanks Viewer 1020...

Ahhh I love a bit of cable foo :-D Have you considered brewing something for the CO2? I have a pipe dream of brewing Mead because it is utterly delicious and to be frank if a viking can brew it in a grubby mead hall then I sure as hell can! The most significant thing is that this will bubble...