You need to clip the the tops of your Colas, first for the fact that they will multiply but also so that you force the Potassium and cellulose to the outsides of the plants hence making them grow sideways or "Bush-Out" instead of growing taller and taller.
Your probably cutting the bottom to low leaves because they're not catching any light and you figure "why waste the nutes, right?"
Correct thinking, but if you want your plants to grow bushier, "trim the tops" and in reverse, if you want your plants to grow taller, "trim the sides".
Another side point in your room is that in the third week of flowering you want your temperature to be around 68-80 degrees farenheit, but the fact of the matter is what is the humidity in your grow-op?
Im guessing that in the amount of vegetation and Oxygen output of your plants your humidity must be getting in the 80 percentile. Ventilation is still probably a good thing you got going with your fans, but the amount of runoff from your nutes into your water is a VERY bad thing. If you are using rockwool fiber and clay pellets, you must remember that you have to "prewash" your hydrated clay pellets. Though the pellets are void of any pH changing elements, the amount of buildup in those flood containers is WAY too full of bad stuff.
Also, from your pics (in your best resolution *giggle*) your beginning to have to much root rot on your containers. From my view of the containers (they seem to be white) which could explain for the possibility of there being some kind of ALGAE growth in your flood containers ("remember you want your roots to be in a LIGHT PROOF container")......"aint no sunshine in the dirt where they reside"....
*Just spray paint the outside of your containers with Matte Black spray paint. Get your self a 3% mixed version of some
Hydrogen Peroxide (food grade at 35%) and then add it at 1 part to each 12 parts, thereby making at 3% and at the best grade.
****READ BELOW FOR
HYDROGEN PEROXIDE IN YOUR SYSTEM****
How to use/apply it
H2O2 comes in several different strengths: 3%, 5%, 8% and 35%, also sold as food grade
Hydrogen Peroxide. The most economical is 35% which we recommend be diluted to three percent before using. When working with food grade H2O2, it is very important that you clean up any spills or splashes immediately, it will damage almost oxidize everything very quickly. Skin will be temporarily bleached pure white if not washed cleaned. Gloves are strongly recommended when working with any strong chemical. Food grade H2O2 can be diluted to three percent by mixing it one part to eleven parts water (preferably distilled). The storage container should be opaque to prevent light from getting in and it must be able to hold some pressure. If three-liter pop bottles are available in your area they are ideal for mixing and storing H2O2. There are twelve quarter liters (250ml) in three liters, if you put in one quarter liter H2O2 and eleven quarter liters (250ml) water in the bottle it will full of three percent H2O2 and the bottle can hold the pressure that the H2O2 will generate. Three percent
Hydrogen Peroxide may be added at up to 3 ml's per liter (2 1\2 tsp. per gallon), but it is recommended that you start at a lower concentration and increase to full strength over a few weeks. For hydroponic applications, use every reservoir change and replace twenty-five percent (one quarter) every day. Example: In a 100L (25gal) reservoir you would add three hundred ml's (3%) H2O2 when changing the nutrient. You would then add seventy-five ml's more every day. [Editor’s note: high concentrations of H2o2 can be detrimental to organic additives (such as beneficial additives) and organic nutrient mixtures.]
Application: US Standard
1. 28*G/C= Liquid Oz's per day
Metric 10*L/C= Ml per day
Where; C= % concentration of H2O2 L= Number of liters in reservoir G= Number of Gallons in reservoir
Example: How much 3% H202 should I add to 7 gallons of nutes?
1. 28*7/3=2.986 Oz's each day.
***IN HYDROPONICS***
Change your nutrients. Add H2O2 to the system. This will add oxygen and chemically eat dead roots. If roots are badly rotted and can be pulled away by hand, you should cut them off. They are already dead and will only rot, causing further problems. Add a fungicide to kill any fungus that is probably present in the rotted tissue to prevent it from spreading. Increase aeration of the reservoir – add air pumps and stones. An air stone under every plant is usually very effective, but will require a larger air pump. Decrease the reservoir temperature, oxygen dissolves better in cold water and disease causing organisms reproduce slower as well. A good temperate range is 62F to 65F; anything above 70F will eventually cause a problem. It is also a good idea to remove any wilting plants from the system and put them on a separate reservoir so they don't infect plants that are still healthy.
I know that is alot of information but im here to help.
Your biggest problems in the nutshell is the lower of the temp, to offshoot the amount of heat from your lights.
Then adjust the humidity much lower given the surrounding temperatures.
After you have added about 1/2 fl Oz to every gallon within your growing hydro kit, you should be good for killing off all the dead microbes in your water as well as cleaning and killing off the bad parts off your root system, thus making their uptake of nutrients much more efficient.
Anybody else got any answers im always here!!!
Send me your question, info, updates, hell gimme an invite for a smokeout.....
