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.
Pura Vida is a pretty well known brand of hydroponic nutrients, and has been tried by a lot of different gardeners. Pura Vida hydroponic nutrients are great for indoor gardening because they come in liquid format. You measure out the desired amount of nutrients, and pour them into a gallon of water. After mixing the nutrient solution, it is ready for use.
You apply Pura Vida nutrient solutions with normal irrigation. The best time for feeding is usually in the morning, when the plant is just starting its metabolic processes for the day.
Note: The Pura Vida Organic Solution was OMRI Certified Organic. The Pura Vida Grow was not organic. The plants did not seem to notice the transition.
The first things you need to know about the Pura Vida combo is there are micro nutrients built in. It is a two part solution, but only one part per phase. One part per phase is talking about the growing phase of the plant, Grow or Bloom.
You only need to use the grow for the first part of their life. You only need to use Bloom for the second part of their life.
If you are new to hydroponics, I recommend starting with that type of simplicity. You are making up for the simplicity with the quality of nutrients.
Advanced Gardener’s Box: There are instructions for an aggressive two part formula on the back labels of these bottles. The PPM of the nutrient solution is MUCH higher than the one part formulas. Only experienced gardeners should attempt the aggressive formula once you know how to grow your particular variety of plant. It is very easy to salt lock your plants with this aggressive formula. You need to do frequent water changes to ensure balanced PH.
The Negatives:
I tested the nutrients in a large variety of hydroponics systems including three different drip systems. On the drip systems that used drip emitters, about 1 in 10 drip emitters would clog from the organic material. One way to defeat those clogs is to mesh out the chunks of fertilizer before you pour it in your reservoir. There are also pre-filter systems that can catch some of those pieces.
In open-ended 1/4 inch tube drip systems, with no drip emitter, the nutrients worked beautifully. The key to success with the open-ended tube system is to lower the ppm of your nutrient solution while buffing the number of regular feeding times as the plant grows and expands it’s root system.
The open 1/4 inch tube allows the root systems to get optimal amounts of aerated water. Use an aeration stone in your reservoir so the nutrient solution stays oxygenated and moving. The open ended 1/4 inch tube allows the water to connect with more air molecules before landing in the plant container. This system works for hydroponics, soil-less, and even soil growing methods. Talk about versatility.
Overall
Consider trying these nutrients if you have never used them. The bottles cost a little more than the lower end hydroponic nutrients, but thats for a reason. Do not under estimate the strength of these nutrients. Make sure to lower the ppm of your nutrient solution so you do not get salt locked plants. These nutrients can go up to three weeks with no water change in a 15gallon + reservoir. However, you should monitor your PPM for optimal conditions. Water changes every 12-14 days with a standard plain water rinse out is typical.
Look for the OMRI Certified bottles at your local hydro shop or you can order them online.
Mixing nutrients is an essential part to all hydroponic growing systems. Plants require nutrients to grow. Hydroponic systems are designed to ensure maximum nutrient uptake. Use this guide to mix your nutrients correctly every time! Mixing nutrients in your reservoir is easy – follow the pictures if you are confused.
Start with plain water to mix with your hydroponics nutrient.
Start with reverse osmosis water if you can. I use one gallon jugs to fill water and mix nutrients. Growers with bigger reservoirs will want to use a 5 gallon bucket to mix nutrients. Make sure the container you use is food grade.
Get a clean measurement tool like a cylinder. Read the label of your nutrients to determine the measurement of nutrients you need per gallon. If you are using a five gallon bucket make sure to multiply by 5. I like to start with half of what the bottle recommends to ensure I don’t burn my plants. Pour your high grade organic nutrients into the measurement tool to make sure you have the correct amount.
Pour your hydroponic plant nutrients into your measurement tool.Measure and double check your plant nutrient measurement before adding to your water.
Make sure you double check your nutrient measure. It is good to know the amount of nutrients used and at what time in the plant’s life cycle. Jotting down quick notes of these metrics and their results can leave you with valuable information for your next crop. Grow logs are an essential tool in building a better growing environment.
Once you have the correct amount of nutrients, pour them into you water that is to be mixed in the reservoir.
Line up your measurement device with the lip of your container and pour your nutrients in slowly. If you tilt the cylinder too much you may overshoot your container. If you spill some the measurement you took is now wrong. The loss will not affect your grow in a severe manner, but it is nice to have close to accurate measurements. Even if you are trying to achieve 100% efficiency you are unlikely to do so.
Cap the container and shake the nutrients until they are well mixed.
