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When changing the weekly water, do you refill the ...
BossHogg6started grow question 5 years ago
When changing the weekly water, do you refill the basin with regular, then add a 1/4 cup.of water with the grow formula? Or, do you fill it all the way with the grow formula water? It's says to top off with regular water between changes, but nothing about the refill.
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Fruitgroweranswered grow question 5 years ago
Hope this helps, To do this, empty or drain 50% the total volume and replace it with fresh water (example: if your reservoir holds 100 liters, and over a couple weeks your logs show you’ve added 50 liters by topping up the water, it’s time for you to take out 50 liters and add the same amount clean, pH balanced water). Most hydroponic systems need this larger water change as frequently as every two weeks, although smaller reservoirs may need it as often as every week to ten days. You will also need a daily or every couple of days top up of water before a whole reservoir change. 🌱👍
OutForRealanswered grow question 5 years ago
You need a certain amount of nutrients in the water so a certain level of ppm/ec. When you add plain water you are lowing that level ( not good ) so when you are refilling your tank you need to reach a certain ppm/ec level ( so you add nutrients)
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motaman311answered grow question 5 years ago
Couple different ways you can do this, but I wouldn't mix the nutrients prior to them going into your water.. they are in separate bottles mainly due to how they are chelated.. or how the ions and molecules are bonded together (your nutrients N,P,K etc)... so you want them to be in some water before you mix them. Each nutrient company has their own preferred method/order of mixing nutrients, but typically you add your micros first (cal-mag, armor si's) then your macros (N,P,K). For example, Armor Si (silica) suggests you wait 15 minutes before adding in any other nutrients... as it doesn't react well initially with high PH or high PPM solutions.
You should change out your nutrients every 1-2 weeks.. I like to do it every 7-10 days. If you have a separate reservoir, then it's much easier because you can fill that reservoir, and just swap them out with the new fresh nutrient solution. If not, you have to remove all the water manually and make sure you give your reservoir a wipe down/cleaning, Calcium and salts will build up on the bottom of your reservoir... clean the air-stones and airlines too. If you remove the water manually, I suggest filling the reservoir halfway-75%.. adding your nutrients, 1 at a time, then topping the reservoir off. Filling the reservoir to ~75% allows some room for error as well, so if you add too much feed and your PPMs are higher than your target PPMs, you can easily dilute your reservoir.
Also, you should definitely make sure you reservoir is light proof... cover those holes! Light getting to your water is 1 of the worse things for hydro growers.. you will get root rot, algae build up, high water temps, and the roots don't particularly like light either. Don't be afraid to send me a message if you have any other questions... I will try to help the best I can 😁. good luck and happy growing!
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