We have a relationship MMI Laboratories, one of the best laboratories in the US when it comes to having your water tested to see what levels you might have in your solution that might be harmful to your plants. The larger the operation you have the more important this testing becomes. It is advised to even have your water tested even when using RO water.
How to prepare sample:
When you get ready to send your sample off find one of your drinking water bottles that you have bought from the store and either drink the water or pour it out. Then take the water you are going to have tested and fill the bottle up with the sample water three times (3X) and pour out completely each time. Then fill it up for the 4th time and put the cap on the bottle, then VERY Importantly, take some clear or masking tape and wrap around the cap and the bottle to make sure the cap does not come of during shipping. Then place bottle in a box with either some bubble wrap or packing peanuts around it to cushion the ride.
Next fill out the submission form located at this address. Print out the form and fill out with all pertinent information. Take special note of the left column under, (Sample Type:) make sure you put in line 1 if 1 is going to be a water test, then in the (Description,) column put down where this water sample was taken from ex. (well, city water, tank water, before RO, after RO,) You then put the printed submission form in the package the water sample is being sent in. Make sure that your package has the correct address on your label with your return address.
Put on the form you want a Greenhouse Water Analysis. Please also notate on the form that you wish to have a copy of the results sent to us here at VertiStack Hydroponics, LLC via email.
Cost of test is $45. Include a check with your form and sample, made out to MMI Laboratories.
183 Paradise Boulevard, Suite 108
Athens, GA 30607 USA
For growers who wish to maximize their crop production and have the optimum feeding program, there is no better way to accomplish this task then having periodic leaf Tissue Analysis. With this testing procedure you can find out what elements and minerals your crops are deficient in. This is important for maximum yield as during different times of the year your plants are using more and less of certain elements that are in your nutrient tank. This is especially even more important in recirculating nutrient systems; for example, in the summer time when it is at it hottest your plants are going to be transpiring a lot more than if it were in spring time or fall when the temperature is cooler. When your plants transpire a lot during these times they will take up a lot more calcium and boron, which if you don’t know they are defiant in will cause less than optimum yield for your produce. When you know your plants’ deficiencies, these elements can be added by making a custom nutrient blend mix.
How to take tissue sample:
You want to take your samples in an X pattern. Lets say you have a 50 VertiStack towers system, and pretend it is in a big box. You want to go to the tower that is at the upper left side of the system and take five (5) leaves off of one of the plants. You always want to take the newest fully expanded leaves, not the small newly developed leaves, (Very Important.) Then repeat process and go to the other three corners and take five (5) samples each from those corners as well, which will give you a total of twenty (20) leaves so far. Then where the two intersecting line meet in the middle of your garden take another five (5) leaves there as well, giving you a total of 25 leaves.
Next put leaves in a paper bag only, (Very Important.) Never use any type of plastic bag or samples will be ruined once they get to the lab. Next place bag of leaves into a cardboard box, or a cardboard UPS shipping envelope, making sure again your shipping device has no plastic liner. Then fill out the submission form here with all your information. Put in line 1 or 2 if you are getting a water sample as well, what type of plant it is, and what Species it is, ex. Strawberry/Marion variety. You can also make notes as to where in the field or garden was taken.
Put on the form you want a Plant Tissue Analysis-Standard Test found here. Cost for test is $46.