![]() These systems need about 2 gallons of water per hour, per tower. Vertical and Tower systems are also easy to calculate volume. Multiply 2 by the total number of buckets to get the total flow rate needed. Each bucket needs to receive approximately 2 gallons of water per hour. Multiply that volume by the number of channels in your system to get the total system volume.ĭrip irrigation systems, aka Bato Buckets and Dutch Buckets, are pretty simple to calculate. Once the water reaches a depth of around ¼”, take note of how much water was added. Since NFT systems don’t use a lot of water, I like to use the marked 2-quart buckets you can get from a big box store. Plug the ends of one of your NFT channels, and begin adding water to the channel. That is your flood volume.Ĭalculating the volume of an NFT system works similarly to an ebb & flow system. Take note of how many gallons it took to reach that point. Begin adding water to the flood tray until the water reaches the overflow port and begins draining back into the reservoir. Next, fill up a container with a known amount of water (5-gallon buckets work well here). To figure out the volume of an ebb & flow system, first plug the fill port so water doesn’t immediately start draining. For instance, if you’re using 5-gallon buckets each bucket is probably holding around 3 gallons of water. If you’re using a deep water culture system, it’s pretty easy to figure out how large the system is. Before we do that, let’s answer the last two questions. Check out the Ebb & Flow Pump Sizing section for more information on calculating your own GPH Multiple.Ĭonfusing? Don’t worry, I’m gonna walk through the calculations for each system type. Systemġ The 20 multiple is based on a 3 minute fill time. ![]() I’ll help you calculate your actual pumping power (also called flow rate) a little further down.Ĭlick on the links in the table to go directly to a specific section. Note: These values are gallons per hour (GPH) recommendations. The table below will give you a general idea of the pumping power needed for your specific system. If you need help with that, check out this beginner’s guide to hydroponic systems. There are a lot of options when it comes to hydroponic systems. Third, how high above the reservoir will the system be?Īs long as you can answer those questions, I’ll help you answer the rest!Īlready know what size pump you need? Check out the 5 Best Hydroponic Pumps & Aerators I use and recommend. ![]() To select the best water pump for your hydroponic system you need to know a few things ahead of time.įirst, what kind of system are you building? Picking the right size hydroponic water pump or aerator isn’t rocket surgery.
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