Home Pool Alternative Sanitizers Ionizers ClearBlue A-800 Ionizer for Pools and Spas | 120V/240V NEMA Plug | 25,000 Gallons | A-800NP
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ClearBlue A-800 Ionizer for Pools and Spas | 120V/240V NEMA Plug | 25,000 Gallons | A-800NP

ClearBlue A-800 Ionizer for Pools and Spas | 120V/240V NEMA Plug | 25,000 Gallons | A-800NP ClearBlue A-800 Ionizer for Pools and Spas | 120V/240V NEMA Plug | 25,000 Gallons | A-800NP ClearBlue A-800 Ionizer for Pools and Spas | 120V/240V NEMA Plug | 25,000 Gallons | A-800NP ClearBlue A-800 Ionizer for Pools and Spas | 120V/240V NEMA Plug | 25,000 Gallons | A-800NP ClearBlue A-800 Ionizer for Pools and Spas | 120V/240V NEMA Plug | 25,000 Gallons | A-800NP

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  • Reduces the EPA approved concentration of chlorine by up to 90%
  • Leaves your water crystal clear, even after heavy use
  • A-800 model works on spas and pools up to 25,000 gallons
  • Once the ClearBlue Ionizer is installed, you set it and forget it
  • Package includes ClearBlue control unit, electrode, electrode housing, and copper test kit
Q & A
  • ClearBlue Replacement Electrodes for Ionizer | A-750E
    ClearBlue Replacement Electrodes | A-750E

  • ClearBlue Ionizer Clear Replacement Tee | PLA-85142
    ClearBlue Ionizer Clear Replacement Tee | PLA-85142

The Next Generation of Pool Water Treatment
The ClearBlue pool ionizer hooks into your pool filtration system and releases microscopic mineral ions which control bacteria and algae. This allows you to reduce the chlorine, algaecide and other chemicals by up to 90%. The ClearBlue Ionizer costs less than a salt chlorinator and ClearBlue mineral pools are less effort to maintain than traditional chlorine or salt water pools.
The EPA and government agencies around the world recognize that chlorine and bromine are extremely effective at keeping your pool safe for swimming. Unfortunately, chlorine is also a toxic chemical that studies show can cause you and your family harm.
ClearBlue Pool Ionizer reduces the chlorine concentration by up to 90%
ClearBlue is an extremely effective algaecide and also assists in controlling bacteria and viruses. This allows the chlorine in the water to work more effectively, so you can safely reduce the concentration to 0.5ppm -0.6ppm from the 1ppm - 3ppm that is recommended with chlorine or salt alone.
Part of a complete system for lowering chlorine concentration
According to EPA no approved pool sanitizer is 100% chlorine (or bromine) free. But with a ClearBlue, you can minimize the concentration while maintaining water that is safe for you and your family.
Combining ClearBlue with zinc-chlorine pucks and a non-chlorine shock provides a complete solution for controlling bacteria, algae and organic waste with a low overall chlorine concentration.
Lowers the chlorine concentration in salt water pools
ClearBlue in combination with salt-based chlorinators allows you to set the chlorine output to the lowest setting. This extends the life of expensive salt cells, while keeping the water clean and clear, even after heavy use.
Soft water, lower chlorine prevents drying and itching
ClearBlue releases microscopic mineral ions into the water which gives it a soft, comfortable feel. You won’t get the drying, itching and fading effect that can happen in pools with a higher chlorine concentration. The silver and zinc minerals in the water are also great for your skin. You’ll feel the difference right away.
Unaffected by pH and sunlight
Rising pH and intense sunlight can reduce the effectiveness of chlorine. ClearBlue ions maintain a consistent concentration under all pH and sun conditions giving you the peace of mind that your algae and bacteria are always being controlled – even if your chlorine level is low.
Easy, low cost pool maintenance
Once the ClearBlue Ionizer is installed, you set it and forget it. The electrodes that release silver, copper and zinc ions are replaced about once a year.
Safe for the environment
Water drained from a ClearBlue pool is completely safe and will not harm your surrounding plants or landscape.
How Does it Work?
It's all about the ions 
ClearBlue continuously releases harmless microscopic ions into the water that seek and destroy bacteria, viruses and algae. Ions are picked up by the water as it passes over an electrode that is installed into the plumbing of your pool or spa.
What's an ion?
An ion is a molecule where the number of protons and electrons is different, giving the molecule a net positive or negative electrical charge. Because of this charge, ions are attracted to bacteria, viruses and algae and destroy them on contact.
What's an electrode?
A ClearBlue Electrode is a metal fork that releases ions into the water according to the settings on the ClearBlue controller.
Combines ancient knowledge with modern technology
ClearBlue extracts a proprietary blend of pure elemental silver, copper and zinc ions to cleanse and purify the water, while leaving your skin smooth and soft after each swim or soak.
Controlled at the touch of a button
Ion levels can be adjusted to the size of your pool and tub at the touch of a button. A test kit included with your ClearBlue allows you to test and optimize the levels for your liking.
How Do I Install ClearBlue?
The ClearBlue comes with a PVC tee junction that can be placed anywhere in the plumbing of your pool or hot tub. Ideally, it should be placed as close to the water or filter as possible.The tee can be horizontal or vertical.
The ClearBlue electrode which houses the metal that creates the ions is threaded into the tee.
The ClearBlue controller is an electrical device that is fastened to a flat surface near the tee. A cord from the controller plugs into the electrode.

Q & A
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Browse 9 questions Browse 9 questions and 7 answers
Does the pump need to be continuously running with this ionizer? I have a programmable pump and it doesn't run all the time but there is constant power to it.
A shopper on Mar 15, 2021
I have a simple above ground pool for now (anticipating a Covid summer) in Ontario, Canada. It is a 18ft round x 48 depth. Which would you recommend?
Denise L on Apr 30, 2020
BEST ANSWER: Hello - We would recommend the A-800 model for an 18ft round pool.
What would a basic setting be for a wood hot tub that is rarely used?
Verna H on Jul 8, 2019
BEST ANSWER: For a hot tub, we recommend the A-400 model. The settings are in the manual which you can download here: https://www.poolsupplyunlimited.com/Products/Manuals/158072_20191311300.pdf.
ClearBlue A-400 Ionizer for Spas | 120V NEMA Plug | 2500 Gallons |  A-400NP120
ClearBlue A-400 Ionizer for Spas | 120V NEMA Plug | 2500 Gallons | A-400NP120
ClearBlue A-400 Ionizer for Spa | 120V AMP Plug | 2500 Gallons | A-400H-AP
ClearBlue A-400 Ionizer for Spa | 120V AMP Plug | 2500 Gallons | A-400H-AP
ClearBlue A-400 Ionizer for Spas and Hot Tubs | 120V/240V AMP | 2500 Gallons | A-400AP
ClearBlue A-400 Ionizer for Spas and Hot Tubs | 120V/240V AMP | 2500 Gallons | A-400AP
Does the ionizing light suppose to blink when you push the large dose button?
A shopper on Jun 3, 2018
BEST ANSWER: The 'Ionizing' light will blink when the controller is on 'Ion/Action'. If you select 'Large Dose' and set the number to 1 or higher, the 'Ionizing' light will be ON. If this is not the case, call their toll free customer support line.
I've read that adding a UV/Ozone is recommended with the ClearBlue Ionizer if you want a truly chlorine free pool. Is that a recommendation you support, and which one would you add?
David S on May 15, 2020
BEST ANSWER: If you are considering UV or Ozone to pair with ClearBlue, Ozone is the better choice. UV light and ClearBlue both control bacteria in the water, but you still need an oxidizer. Ozone is an effective oxidizer. So if you pair ClearBlue with Ozone, you can reduce the chlorine to near zero (or if you choose to, run the pool chlorine free).
Can you install this on a gunite pool?
A shopper on Apr 15, 2020
BEST ANSWER: Yes, ClearBlue is great for all pool types. We have several builders in Texas, California and other states that put them on every gunite pool they build. As always for any pool system, follow the instructions in the manual for best results.
Can you use Clear-Blue with a pool heater?
Shelby on May 5, 2021
How long will the A-750E electrodes last while treating a 20,000 gallon in-ground pool? How often do they need to be replaced?
A shopper on May 3, 2020
How long must the pump/filter be on for the ionizer to be effective?
Larry M on Sep 19, 2016
BEST ANSWER: There is no minimum pump or flow requirement for the ionizer. As long as the pump is operating for a few ours per day, you are fine.
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Adobe Acrobat PDF Operation Manual
ClearBlue Ionizer vs Salt Water Pool
How to Install a ClearBlue Ionizer

The ClearBlue Ionizer carries a five (5) year limited warranty to be free from all manufacturing defects. This warranty does not include replacement mineral cells, which are subject to normal wear and must be replaced periodically. You must obtain a Return Materials Authorization (RMA) number from Customer Service before returning a product. The device will be repaired or replaced within fifteen business days following a claim. This warranty is in effect starting the date of purchase and is only applicable to units with an unopened enclosure and a serial number that is in its original unaltered state. This warranty does not apply to the following incorrect operating procedures, breakage, or (transport/impact) damages caused by fault, abuse, misuse, carelessness, misapplication, alteration, modification, improper maintenance, over voltage of the unit as well as act of God, fire, chemical alteration or natural corrosion or any other casualty. This warranty does not apply to the spa or pool but solely to the components manufactured by ClearBlue Ionizer Inc.
This information was updated on 4/13/2020. For the most current information and full warranty policy please visit www.clearblueionizer.com.

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