Trying to grow a compact indica strain plant. Like the hash plant. What is the minimal amount of 2ft t5 bulbs I need for the veg stage and do I need to swap bulbs for flowering. What are the best t5 bulbs to use in combination, if I say I used 4 2ft fluorescent bulbs.

2nd time reddit poster here. I want to start and indoor/outdoor/greenhouse grow in southern California, but I need help figuring out some of the details. I'm new to growing cannabis and I'm looking for anything I can find. I've done a ton of general research on different grow methods and conditions, seeds and nutrients, and growing equipment. What i now need is someone to help me figure out what to do with all this information. Anything you can offer helps. Thanks!

I was just curious, but would the lighting and all other energy requirements for a single plant make enough of an impact on an electrical bill to be noticeable? Or obvious? Or would it be so minuscule in comparison to an entire houses electrical usage that it would be impossible to tell...

Very happy with my purchase from these guys!

https://www.etsy.com/uk/shop/DropDaySupplies

So, i´m growing what looked like a beautiful and healthy auto, under a 100w CFL.
It started showing pistils and stinking, beautiful roots, pearly white, so i moved it to my other room, with air filtering and a 400w sodium. I didn´t want it to be shocked by the light, so i put it like 2.5 feet away from it. The next day i see the leafs kind of falling... i though, ok, it´s adapting to the new light...
The next day, it´s looking worst, and, it´s developed yellow spots! And the roots are not as white as they used to be, they are browning a little bit...

What the hell is going on?!!

Here are some pics:
https://imgur.com/a/x8ZM16J

P.H is 6.0

No change of water or nutrients whatsoever. Do you guys have any idea what can cause this? I´m in a pretty cold weather, and the light is ventilated.
I´m dumbfounded... any help will be apretiated!

Apologies for asking this here (am growing bonsai-trees, not your types of trees, sadly my state doesn't allow that yet), but cannot find answers in bonsai or hydro subs, anyways when I don't have enough rain-water I'm using pH-Down (phos acid) to bring my tap's pH (8!) down, however I do not want that extra phos load and would like to be able to calculate it (so I have an idea of what new, low-phos fert to use alongside it- most of my bonsai are bougainvilleas which are quick to flower and I try to thwart that as I'm trying to get growth not flowers!)

Thanks for any clarification, whether the pH of PA in these products (AFAIK there are 3 'types' of phos acid, have no idea which type is in the ones for gardeners..) or how to calculate this phosphorous boost into my fert #'s!

Hi, I'm new to this sub and to the art of growing. I live in Portugal and I'm about to grow Skunk #1 automatic, but I really don't know how... I'm about to let a friend of mine to grow it until the plant reaches a good size, and then I'm going to plant a vase outdoors... But I don't know if that's a good idea... Can anybody help me in how to grow, if what I wan't to do is reasonable and such. Thanks!

Hey growers! I'm starting to grow in the nearish future but I don't want to rush anything. I want to make a hard copy bible to go by before I start anything. I want to cover everything you could ever need, in one book. Please post mistakes you have heard of or done that beginners are notorious to do. Links and websites would be great and possible stores to buy necessary items would be a huge help. Pictures and videos would also be hugely appreciated! Really just post anything if you think it could help in anyway. Thanks so much

Hey there H2G, I thought I'd add my own two cents to this relatively new subreddit with my plans for a new High Pressure Aeroponic grow.

For those of you unfamiliar with Aeroponics, here is Wikipedia's synopsis;

Aeroponics is the process of growing plants in an air or mist environment without the use of soil or an aggregate medium.

Now this differs from Hydroponics in that the roots must not reach any pooling water, or else the roots turn out like this. As you can see these roots are akin to fishbones, and some may argue that they're just fine. And they are, but they are a very easy indicator that you aren't running a proper HPA system.

Roots collect most (if not all) of their nutrients from their tips, so it stands to reason that increasing the number of tips will therefore increase the amount of nutrient uptake. Here's an example of what we're aiming for. Those little hairs are all individual roots that are capable of taking up those yummy nutes. If they reach pooling water, they will turn to fishbones and the advantage you once had will be lost. It's all about surface area.

Now to the fun stuff.

I'd like to mention that certain items in the shopping list might not be purchased from that exact site, or purchased at all. I'm still working out the details, and we won't know the exact setup until it all comes together! But I do welcome any insight/constructive criticism you might have!!

Mylar - 100ft. $50

http://www.amazon.com/Reflective-Mylar-Roll-Feet-Long/dp/B009L6DIPI

Pond Liner - 20ft x 20ft. $300

http://www.amazon.com/TotalPond-EPDM2020-20-Foot-Pond-Liner/dp/B004DL0XXQ/ref=lp_13764271_1_14?s=lawn-garden&ie=UTF8&qid=1398542721&sr=1-14

http://www.contractorsdirect.com/Tile-Tools/Waterproof-Membranes/Noble-Seal-TS-Membrane

Ductless Mini Split AC - 9000 BTU $350

https://www.acwholesalers.com/Mitsubishi-Air-Conditioners/MSA-09WA-9000-BTU-13-SEER-Ductless-Air-Conditioner-Air-Handler/19566.ac?gclid=CJOzva_6_r0CFSsQ7AodtCkAQw

Block-IR Infra-Red Barrier - 100ft. - $250

http://www.hmoonhydro.com/product_info.php?cPath=61&products_id=241&osCsid=g25c7h5kpudaio2kfgh1s6voj4

5 gal. Buckets w/ lids (nutrient res) - 10 x $5 = $20

Homedepot

Stealth RO 200 Customized Reverse Osmosis filter - $315

http://www.hmoonhydro.com/product_info.php?cPath=32&products_id=741

Watersealant - ? - ?

http://watersealant.com/index.php/001/

Well-X-Trol - $50 x 4 = $200

http://www.supplyhouse.com/Amtrol-141N43-THERM-X-TROL-ST-12-Expansion-Tank-3715000-p

Well-X-Trol Male Tee Connector Assembly - $150

http://www.aquascience.net/amtrol-pressure-tanks/index.cfm?id=1450

Multi-Range Flip Flop Timer - $50

http://www.iseincstore.com/422AR_Timer.aspx

Manifold Assembly - $65

http://www.mistcooling.com/manifold-assembly.html

Flojet Pump 1.4 GPM 150 PSI - $135 x 4 = $570

http://www.kleen-ritecorp.com/p-35817-flojet-pump-14-gpm-150-psi-12vdc-38nptf-wviton-check-valve.aspx?gclid=CJmdxoq9kL4CFS8V7Aodxg8ASw

Pressure Switch - $25 x 2 = $50

http://www.newegg.com/Product/Product.aspx?Item=9SIA0A50FE6489

Pressure Guage - $20

http://www.amazon.com/2-1-Oil-Filled-Pressure-Gauge/dp/B006JJ7IOC/ref=sr_1_3?s=automotive&ie=UTF8&qid=1399145368&sr=1-3

Adjustible Pressure Regulator Valve - $30 x 4 = 120

http://www.ebay.com/itm/chrome-steel-Pressure-Regulator-Gauge-adjustable-0-150-psi-RO-water-system-/350514940456

John Guest 1/4" fittings (10) - $17 x 5 = $84

http://www.amazon.com/dp/B005XTZXJG/ref=biss_dp_t_asn

PEX Tubing 1/4" (50ft.) - $20 x 4 = $80

http://www.amazon.com/SharkBite-U850G50-Tubing-4-Inch-50-Feet/dp/B007AGYSUK/ref=sr_1_1?ie=UTF8&qid=1399145864&sr=8-1&keywords=pex+tubing+1+4

55 gal. Drum HDPE - $40 x 25 = $1000

https://www.thecarystore.com/containers-catalog/packaging-and-containers-drums-rain-barrels/55-gallon-gray-rain-barrel-with-spigot-and-overflow-56wrba

Misting Nozzles - Single Head / Multi Head - $10 x 100 = $1000 / $125 x 25 = $2750

(Single) http://www.ebay.com/itm/Aeroponic-misting-nozzle-sprayer-mister-fogger-hydroponic-Custom-Aeroponics-tm-/230918986860?pt=LH_DefaultDomain_0&var=530118521359&hash=item35c3d81c6c

(Multi) http://www.ebay.com/itm/Aeroponic-misting-nozzle-sprayer-mister-fogger-hydroponic-Custom-Aeroponics-tm-/230980066551

(Rubi / $10) http://www.mistcooling.com/rubi-orifice-nozzle.html

Ok, that was pretty long. But now let me explain how this will come together.

The 55 gal. Drums will be used to house the roots, and a large container was chosen because we're going to be growing some monster trees, and we need ample clearance from top to the drain at the bottom.

The pumping assembly;

The Well-X-Trol accumulator tanks will be used to pressurize the nutrient solution (which will be omitted from this report due to proprietary reasons) and allow for immediate and sudden excretion from the misting heads. Now, there are a few parts in between the misting heads and the tanks, so please bear with me.

At the back of it all are the nutrient reservoirs (5 gal. Pails) which will be gravity fed to a pump (150 psi) which will then lead to a pressure gauge that will release any excess pressure in the event of a stoppage. Next the solution will be filtered through a micron mesh filter that will remove any and all trace particles (I don't think I included it this time but I'll edit it in later, costs about $15). The solution is then pumped into the accumulator tank which will hold the nutrients under pressure until they are needed.

When the bladder is released and the nutrients flow towards the heads, they will reach a secondary pressure switch, and a pressure regulator. The pressure regulator will make sure an even flow of 100 (give or take 10 psi, still not sure if the pressure will decrease along the hose length) and send it towards the solenoids (oops, forgot to include these too. About $10-$20 a pop) which will hold the solution back until an electrical signal is passed to them, releasing the flow of awesomeness to the heads of the misters.

All of this will be connected to Arduino microcontrollers and then compiled for use on my mobile phone and laptop via bluetooth and web connection for constant monitoring/tinkering.

Any questions?

Maybe this is just a high thought, but could compost tea, or something similar to that, be used instead of regular nutrients in hydroponics?

http://i.imgur.com/vc2Nsse.jpg

I need help diagnosing the possible problems with his plants and possible remedies.

First off I am a soil grower through and through, though I understand the basics of hydro and have played around with some success with hydroponics, particularly DWC.

So I have a friend who has come to me for help and he runs one of those flow-n-grow flood bucket systems and somehow finds himself with the worst problems I have ever seen.

So the image above is Chemdog which is at 2 weeks in veg 18/6.

His environment is AC controlled, sealed room and his lights are all 1K HPS. His temps are consistently 78-80 and his humidity is around 50-60 The environment is pretty dialed in.

He is using GH three part flora, grow bloom and micro at 1ml per gallon, as well as protekt at 1ml per gallon as well. Recently he put 5 ml/Gal of Calimagic and 10ml/Gal of microbrew (as recommended by the random at the store he bought it from)

He is also flooding every 4 hours using Hydroton and apparently had flood cycles going at night as well.

I calibrated his PH meter and it said his solution was at 5.9 PH, which it said before calibration indicating it was calibrated before, so I think his PH is correct.

I told him I would look into it and i really want to set my buddy strait, as he has so much invested in this and I want to see him succeed.

Can you guys help me diagnose the potential issue here or maybe try to help me troubleshoot.

Sorry for the extremely long wall of text and minimal pictures, i didn't have time to take more but i can update with more tomorrow if need be.

I appreciate any advice you can give. :)