T
TWH21
Guest
finally someone on my level lol, yea i def dont want to risk using MG with these seeds so ill have to do the same. Dang man i didnt even think to check on ebay for the ph meter hahahaha guess ive been smokin too much :coffe:. are you growing any now?Happy growing and welcome!
I am a newbie grower who is having quite a few setbacks myself. All of the MG Organic soils (potting and garden) have slow release ferts. Not sure on the Potting but the Garden Soil is full of bark. Personally, I wouldn't use it again for my MJ. Also, pH is important! I didn't have the $$$ to fork out for better soil and a pH meter. I didn't really want to do the hour drive to a hydro shop either. Now I am paying the price with my expensive seeds. I will be using organic soil from a hydro store next grow. Probably something not as expensive as OF maybe Roots etc. Also, I ordered a pH meter from ebay for $13-14. Not top of the line, but others use it on this site. It gets the job done. You might be able to use the MG soils if you get the pH under control.
---------- Post added 10-06-2011 at 07:31 PM ----------
A light source is usually measured in Lumens but as the light source is used various measurements as how much of the light being produced is actually directed onto the plants from a certain distance. The unit that is used to measure that is a foot candle. When you are using light for Photsynthetic Active Radiation that is how much of the light actually helpa a plant grow the foot candle is given in PAR units. The infra red spectrum and UV spectrum are filtered out and the remaining part is called PAR units. Most of the heat is in the infra red spectrum from most lights.
When you filter it out you can see the effeciency really dives down. The other effect is the fact that light in the longer wave lengths such as infra red has a much better penetrating affect and makes it to the bottom of the plant easier than the higher spectrums. The full spectrum light is highest at the top of the plant where it is of course higher in intensity because it is closer to the light source but also because the higher spectrums are not filtered by the folliage. To measure intensity you must use a PAR meter to get accurate readings of the usefull light spectrum. It is usually measured top of plant, mid plant and ground level.
I don't have a PAR meter cause they are expensive. I end up useing an old 35mm. camera light meter and my readings are only good for comparison readings between different types of light. These readings are not very useful for any real experimenting and reading your results or doing any real science on the different light bands. For that you not only need a PAR meter but a PAR meter with an accurate set of filters to measure each color band. We are talking several thousnd dollars for this kind of meter. Google both Foot candle meter and PAR meter on google and read until your head spins. I have a Physics degree and I have already done all this stuff. I remember a lot of it. Good reading my buddies.
haha woow is all i have to say :clap::clap::clap: that gets intense! i never would have thought!