Defender RO - Satisfied customer
"The 5 gallon bucket size was good value vs. buying small amounts more often. One improvement would be to include a spout for the top opening. It would make it easier to pour out the correct measurable amount."


Hyper-Guard Plus 7000 is a powerful anti-scalant, specially formulated for feedwaters with high levels of metal oxides, silica, and scale-forming minerals
Please note that this product is limited to economy and ground shipping options and cannot be expedited due to Hazmat restrictions. Shipping is also limited to Continental United States only.
Order by 12 PM EST and this system will be on its way the very next day.
Free standard shipping on most products over $199.
Free shipping on most orders over $199 in the continental USA. $299 minimum for extended delivery states: AK, AL, AZ, CA, HI, ID, MD, ME, MN, MS, MT, NH, NV, OR, UT, VA, VT, WA, WV. Freight orders excluded. Speak to a water expert for more details.
Our Master Water Specialists and Certified Water Specialists review your water analysis and address your specific water problems. WE then design a system that we'll guarantee will solve your water problem(s) and back it with our One-Year Money Back Promise (Guarantee).
It all starts with a Laboratory Test of your water. Then, our Master Water Specialists and Certified Water Specialists will review the results of your water analysis and scientifically discuss the best way to treat your water, provide on estimate of how to do that, and then we provide you a One-Year Guarantee of Satisfaction. It's our Promise to You that our system will do what we say or we will give you your money back*
Controlling the precipitation of certain cations or salts has long been an issue with making Reverse Osmosis (RO) technology economically viable. Scale precipitates on the membrane surfaces and permeate flow and quality are adversely affected. Excessive build-up on the membrane can permanently damage it and accelerate the need for replacement.
RO antiscalants, sometimes called scale inhibitors, are special chemical formulations that are added to increase the solubility of soluble salts. The use of such antiscalants can form an essential component in the operation of well run reverse osmosis systems.
Hyper-Guard+ 7000 is a powerful antiscalant, specially formulated for feedwaters with high levels of metal oxides, silica, and scale-forming minerals. It is effective over a wide range of concentrations, and does not flocculate dissolved polymers such as residual coagulants or iron or aluminum-rich silica. Use of this product is recommended for reducing the operating and capital costs of reverse osmosis (RO), nanofiltration (NF) and ultrafiltration (UF) systems.
| GPD RO | Initial: To 15 Gallons RO Water | Ongoing: To Each Gallon RO Water |
|---|---|---|
| 2,000 | 30.0 oz | 2.0 oz |
| 4,000 | 39.1 oz | 2.6 oz |
| 6,000 | 49.2 oz | 3.3 oz |
| 8,000 | 58.2 oz | 3.9 oz |
| 12,000 | 96.0 oz | 6.4 oz |
| 16,000 | 113.0 oz | 7.5 oz |
Based on US Water Hyper-Guard, 5 GPD Pump, 15 Gallon Tank. Set pump to "5" (50%). Stir tank weekly.
*Manufactured by King Lee Technologies for US Water Systems called PreTreatPlus 0100 by King Lee
Overall rating: 4.6923075 / 5 from 13 reviews.
Review topics: ["size","amount","shipping","bucket"].
"The 5 gallon bucket size was good value vs. buying small amounts more often. One improvement would be to include a spout for the top opening. It would make it easier to pour out the correct measurable amount."
— Harris, D. (5/5)
"We have been using this for 7 years and it continues to remove the solids making our water manageable through the Reverse Osmosis. We had gorilla water that turns into bottled water quality but I think it tastes better than bottled water."
— LISA W. (5/5)
"This is my second purchase of this anti-scalant, and it does a very good job of protecting the membranes. My first purchase was in 2017. I keep a close watch on the tank level and there are times when we do not use a lot water so I do not need to add the anti-scalant very often. Will not hesitate to purchase again to enable the smooth operation of my RO."
— Beryl J. (5/5)
"It’s a giant bucket full of Hyper-Guard Plus 7000 RO Scale Inhibitor. I use the smaller bottle to dose it correctly. I go through about a bottle every four months so this larger size helps out a lot."
— theron d. (5/5)
"Works well for my Defender reverse osmosis"
— David S. (5/5)
"Not only is this a great product but the customer service is excellent. We had a package that was lost and they jumped right into action to get another one asap. I highly recomend both the product and the company."
— Navajo L. (5/5)
"Great product"
— Thomas l. (5/5)
"works as designed!"
— Coy K. (5/5)
"Not much else to say."
— Brian V. (5/5)
"Works great,"
— Steve B. (5/5)
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