Sometimes it is best to look at a few pieces of old knowledge and some old school techniques to find some new ideas for enhancing your garden. I have recently come across some mentions of using molasses as a natural fertilizer in your garden and I wondered if it could be used with hydroponics. Let’s take a look.
There are rumors about adding sugar to the soil of your garden to increase the sweetness of the fruits of your plants. This may be a bit of a myth and I have not been able to confirm this yet, but I have been checking out the nutrient content of the molasses and I am impressed. There is calcium, magnesium and a bunch of other great stuff in there.
The biggest advantage of using molasses is that it supports a healthy microbial ecology in your hydroponics system. This is one of the biggest difficulties that we, as hydroponic gardeners, can face. You will want to get un-sulfured molasses as the form of sulfur they use is a preservative meant to stop microbial activity. We are trying to encourage those microbes and this would be highly counter counter-productive.
The best way to use molasses is to get some black strap and mix it with water in a ratio of 1 part molasses to 100 parts water. This is the absolute maximum concentration that you want to use. Any more than this and your risk causing root rot or slime in your hydroponics system. You also need to make sure that you fully dissolve the molasses or you are risking clogging your system. IT can gum up your growing medium, pumps or sprayers and be very difficult to clean out. For this reason, I suggest adding the molasses to boiling water, mixing it in completely and then letting it cool before using it with your hydroponics.
