Software
Houzz Logo Print
smalone421

CONDUCTING EXPERIMENT

10 years ago

Hi all,

I have been around these forums for a while, was very active on a few, a few years ago, but lately I have been just reading and trying to learn all I can about hydroponics. Boy there is a lot of things to know and a lot that can go wrong. Anyways I couldn't help to notice all of the different products and how some are described as a near miracle for everything. Anyways I have narrowed down to what I think may be the most beneficial supplements and I decided to conduct an experiment with 6 tanks all growing strawberries, same cultivar (Ozarks Beauty) from the same supplier, with the same base fertilizer ( Greenway Biotechs strawberry fertilizer + Cal Mag) and supplementing some tanks with Peroxide, Amino Acids, and Silica the last 2 from NPK Industry. Each tank will have a separate supplement. I will use the same base nutrients on all tanks and most of the tanks I will be using Lava rocks as the media. I have used pine bark in the past with good results until it got too hot, then I think it promoted a bacterial infection because I lost most 20 plants that were perfectly healthy in a matter a few weeks then had a few that I was trying to nurse back to health probably giving the plant a slower death. Anyways I am using new plants that I have received today and I have 3 tanks planted so far and planting another 3 tomorrow or the following evening.

I am curious on the results and to see if there are noticeable difference. All the results will be observations and I do not plan on doing any lab tests, although I do work in a agricultural lab. My biggest fear right now is the heat. I have no chiller and what I have done with limited success in temperature control is to add a bottle of frozen water every few hours. I know I will not be able to get the ultimate temp of 77 degrees but If I can keep the temps from getting way hot and keep the tanks at the max of 80 I will be happy until we get a break in the temps in a few days.

Anyone have advice on keeping these new borns from drying out. Should I mist them a few times a day. Pour Nutrient water over them, raise the water level, or just do nothing? I will be using a static culture, I know this isn't the best for strawberries but its what I have to work with now. I do plan on building a NFT system next year, but right now this is what I have to work with. I am a newbie to the hydroponic world so any advice would be great. I am starting off with a TDS of 600-700 ppm and then plan on increasing the Potassium level to around 200 ppm. I have looked at a few references that list the concentration of different elements and I will be using these references as a guideline. I don't plan on using a lot of any of the supplements. I am a believer that less is more but I have a few guidelines in what to use on these 3 supplements.

Anyways being a newbie I'm not sure if I should be experimenting but I really am curious on how these things will work. These supplements are not cheap although less expensive that some of the liquid miracle cure products.

Comment (1)

  • 10 years ago

    Brief update after about a month. I started with 5 containers one with just a balanced strawberry fertilizer and Calmag as a control tank. One with the addition of amino acids. One with the addition of silica, and one with the addition of peroxide. I also had one with a different media. This container I was using pine bark with some sphagnum moss but the volcanic rock has worked much better and have replaced the few plants with the pine bark with volcanic rocks. OK things didn't go as well as I wanted and had to juggle things around a bit. First had a bug problem that was eating away at the leaves. Sprayed them with seven. Worked great and no ill effects on plants. I then had some plants that I saw a bacterial infection angular leaf spot. I saw this very early and I sprayed with a fungicide daconil. I know this is not a fungus but I heard that if hit early on it can knock it down. I put these plants in one container, because I know the outcome of this infection from rior experience with plants that were cranking, then dropped like flies. a few plants made it and I do not see any more infection, but a few I did just get rid of because I did not want things to get worse. I have incorporated the healthy plants back into the healthy population after disinfecting the pot and dunking the roots in H2o2 and I do not see any more ill signs. I used the amino tank as my recovery or hospice tank and that tank is now history. I know that I should have not put the ones that recovered back into the population, but I have limited space and all. Anyways the Amino tank I will not comment on any results due to the problems that I was dealing with but when using it I do notice a foamy film on the bottom of the containers, probably from the chelates that it has in it

    The peroxide tank I planted about a week later. The peroxide tank seemed very slow to develop. I was adding in 100ml H2O2 in a 8 gallon container. This was on the low side of the recommendated dosage I have seen but I really think that the H2O2 was reacting with the ions in solution and producing hydroxides. After reading more on the dissolution of H2O2, all the positive effects of H2O2 occur in alkaline solutions. Extra O2 and all that good stuff. When in acidic solutions as most hydroponic solutions it tends to take a different dissoulution route and produces hydroxides and all, I did see precipitates at the bottom of tank when cleaning when the other tanks didn't show any. I do think that it works good as a atheistic for the roots because I had a few roots that were getting a bit slimy and some others that had a little algae on them and that dose of H2O2 did clean the roots up. So now I am adding 100ml of H2O2 a few days before doing a water change. It hasn't shown any ill effects on the plants and all roots look healthy. So I stopped my H2O2 tank and made that the new amino acid tank. And after about a week the plants are taking off. still much less developed than the control tank but it does seem to be responding to the new fertilization where before it didn't.

    That leaves with the Silica tank, I have noticed a difference in canopy density and the silica tank the plants have a few more leaves that the control tank. Petioles and stems seem to be no difference, and possibly a little bit bigger leaves on the silica tank. But not over whelming. The control and the Silica tank has now started producing fruit which at first pulled off the buds when the plants were not large enough to support them. But now I have let them grow. I have had to increase the Calcium in the tanks because some fruit were deformed and on the smaller side. Calcium is now at 120 ppm where I have had it at about 80ppm. I have increased the K to about 160 ppm calculated at K+ not K20. I have not needed to use much to raise the PH. I have ordered some KOH but at the time they could not send it because of registration reasons so I was using some Sodium Bicarbonate. Very very little and if I find that I am having to add more than I am comfortable with, I just do a water change instead. I have not seen any ill effects from Na+ but I have been careful. I do plan on reordering because I know in a week or two that these plants will start eating up all the cations and releasing H+ ions instead of OH- as it does when it eats up all the Nitrates.

    I am running the EC now at about 1.8 and I don't plan on raising it any higher. I change the water every 2 weeks or if the EC drops off 30%. I have been adding in about 50 ml calmag after the 1st week just to try to balance out the nitrates and calcium which are probably the 2 most that can be depleted really quickly.

    Anyways that's my take after a month and will plan on updating once more with any conclusions and the progress with the Amino Acid tank

Sponsored