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Hi People. My hanna ph pen started giving me readings of 0.2 ph in water that has been through an R.O. filter. I looked closer and it looked like it had a build up of nutrients on the paper strip. Does anyone have some good tips for cleaning in general? Thanks!

What can cause a plant to start putting out branches and leaves after it has flowers developing? Hard water? Too much pH down? Thanks for any input!

Newbie question! Where can I get a bottle filled with co2? My grow space is too small for a burner apparently…

How many harvests can you put CFLs through? Specifically 23w=100w soft white for flowering.

Hi Cannabis growing community. Any idea why a plant would start to revert to veg after growing some serious flowers... Can you see the crazy foxtail? I'm certain my lights are 12/12. Been checking them since this madness started. The lights are 6 x soft white 23w=100w CFLs. Here's the site I...

Hey RIU! I'm growing this strain called Tangerine Dream. This lady keeps putting on vertical growth well into flowering! Check out the top to the left in this picture... Above the bulk of bud growth it's got this little sprout of veg growth on top. What's up with that? The right top has maxed...

What EC levels are average for seedling, veg, flower, flush?

About my grow: - DWC bubbler 12L water in 18L bucket - 6.0 PH (using 3.5 - 4 ml PH DOWN) - GH flora series - 20% strength of directions on bottle - 24 C (75.2 F) w/ constant air circulation - 50% humidity - 36" tall - clone planted, vegging started March 13th, 2013 - flowering started 12/12 May...

Here's where I'm coming from; last batch of plants I harvested had problems with nutrient burn. I was using 30 to 40% strength GH flora series. The first symptoms I noticed before they got bad was curling, browning tips. I'm now running 20% and the leaf tips are just starting to curl. Today I...

I've been flowering for about a month and a half now and I'm getting lots of fan leave turning brown around their edges; I read somewhere that during flowering the plant puts all it's energy into bud production and therefore some fan leaves might turn yellow and fall off. Another thing I have...

I'm losing this war. This will be the 3rd session of taking clones since the origin. I've not had a single mother, I have been taking clones from clones. Is this a problem? My success rate in previous attempts have been around 60-70%. But now 0%. They are losing their colour. Here's what they...

Here's the setup. I've got two chambers to grow in. They are 30"x20"x92" each. There's a space between the chambers that I've have heated to 28C (82.4F) and I have the door slightly open to allow the convection of the hot air to keep the air flowing. This is my temporary ventilation system until...

I read in the FAQ that you have to be allowed to make a journal. I've searched but not been able to find any more info on the subject. Can anyone help me out please? :joint:

My plan is to grow a mother plant, and never flower her. She would be in soil and kept under 2 feet tall. I would use her to take clones from to keep a harvest cycle. Is this a reasonable plan? All input is appreciated. :bigjoint: