Water your pot with coco coir thoroughly until water drains out the bottom before adding your seeds or clones.
When not using nutrients, make sure you still pH your plain water before your feed your marijuana!
After your plants have grown accustomed to their new environment (after a couple of days for transplanted clones, or when your seeds grow their second set of leaves) then you will want to move your CFLs so that they are about an inch away from the plant.
Towards the end of the flowering cycle, as your marijuana approaches harvest time, you may notice that some of the oldest leaves start turning yellow and falling off. This is totally normal and is a sign that your plant is taking nitrogen out of the leaves and putting them into the buds/flowers.
Please view the Harvest tutorial for more information about when and how to harvest your plant. This guide will tell you exactly what to look for as far as determining if your cannabis is ready for harvest.
In order to prevent over or under-watering, make sure you water thoroughly every time, and wait to water again until the top inch of coco coir feels dry.
Your marijuana can’t get really get too much light from CFLs and the only thing you need to worry about with the CFLs is burning your plants if they get too close.
The amount of heat these give off is so limited that forgoing to use of large ventilation systems is doable, as long as odors aren’t a concern. Put a CFL in a closet with a small reflect and some mylar around the room, and you’ll be surprised by the amount of light they can produce for such a small purchase.
For the money, we think this is the best CFL light for growing cannabis.
Lastly, they just don’t tend to last for a long time. Lower light-spectrum CFLs burn out at a very fast rate compared to daylight bulbs. Stick to daylight spectrum bulbs and spend your budget and effort elsewhere.
This is the rub of a lot of powerful CFL lights, they tend to burn themselves out and don’t last like LEDs. That being said, this is a very powerful light that will give plenty of power to a medium-sized grow all the way to harvest. The reflectors here are sturdy and well built, they do a good job reflecting that light where it needs to go. The Agrobrite is a good middle ground between the likes of more expensive LED and HPS systems, without shelling out the cash needed for those.
Emarts are our go-to’s for CFLs as the life expectancy is quite good for the price being put into them. These plus a good reflective holder will go a long way to producing some respectable plant.
They’re also a good choice as a supplementary light that can be aimed easily due to them fitting into easily moved light sockets. Aim some of these to the side or underneath a plant that is already doing well via a different type of light and it will add a lot to the growth below the light-blocking canopy on top.
These will never match the light-giving powerhouses that are LEDs and HPS systems, but a well-cared for plant underneath a good CFL system will indeed bear fruit.
2. Philips T2 Spiral CFL Light Bulb – Best Value
They don’t produce enough light in the non-visible spectrums to satisfy what blooming plants are craving and only marginally produce better results. Beyond that, they are worthless for seedlings and vegetating plants, which is where your plant spends most of its life.
Hydrofarm’s Agrobite is a powerful bulb capable of producing large yields of cannabis through sheer light penetration alone but, unfortunately, is only good for one or two grows.