One Tank Clean product guide
Waterpik Aquarius Countertop Water Flosser WP-667 (Modern Gray)
A shared bathroom where several people want their own tip and pressure setting
The gray Aquarius: a plug-in countertop flosser with a ten-position pressure dial, Floss and Hydro-Pulse Massage modes, a 30-second pacer you can switch off, and seven tips with storage for two under the lid. Waterpik lists it for 120 V North American outlets only, and covers it with a three-year limited warranty.
Listing checked . Confirm the model, included parts and availability before ordering.
Published specifications
- Model WP-667; listing prints WP-667CD; Modern Gray
- Ten pressure settings on a base dial; prime at 10, start at 1
- Two modes: Floss and Hydro-Pulse Massage, with LED indicators
- Timer pauses at 30 seconds and 1 minute; can be deactivated
- Listing: 22 oz reservoir, 3.8 x 4.7 x 10.3 in, 1.46 lb
- 120 VAC 60 Hz only; three-year limited warranty
Fit and limits
Strengths
- Seven tips and two under-lid tip slots suit more than one user
- Timer and pacer can be switched off from the mode button
- Reservoir lifts off and is top-rack dishwasher safe
Caveats
- 120 V only, and the manual says other voltages void the warranty
- Needs a vinegar descaling run every one to three months
- Warranty excludes tips and is void if the unit is opened
What this model is and what comes with it
Waterpik's own page calls this one the Modern Gray Aquarius and gives its model number as WP-667. The listing agrees, printing WP-667 as the manufacturer part number and WP-667CD as the model number. The document that covers it is Waterpik's Water Flosser 600 Series owner's manual, which the maker page also links.
The listing's included components are one Orthodontic tip, one Pik Pocket tip, one Plaque Seeker tip and four Precision tips, which is the seven tips both the listing and Waterpik's page advertise. The manual calls the JT-100E a Classic Jet tip rather than a Precision tip, so expect the packaging and the manual to use different names for the same part.
The unit is a plug-in countertop machine with a removable reservoir, a hinged lid, storage for two tips under that lid, and a handle on a hose with its own water on and off switch. The listing gives the reservoir as 22 fluid ounces and the body as 3.8 by 4.7 by 10.3 inches at 1.46 pounds.
Ten settings, two modes, and a timer you can turn off
Pressure is set by a dial on the base with ten positions. The manual says to prime the unit once at setting 10 on first use with the tip pointed into the sink, then to turn the dial down to setting 1 for your first session and raise it gradually from there.
There are two modes, Floss and Hydro-Pulse Massage, chosen with a mode button and shown on LED indicators. The manual says the LED shows which mode the unit is in even while it is switched off, so you can check before you start.
The one-minute timer pauses briefly at 30 seconds and again at one minute, then keeps running until you switch off. It can be deactivated and reactivated with a press and hold of the mode button, and the manual prints the exact hold and the light pattern that confirms it. Unplugging resets factory settings.
The tips and how often Waterpik says to change them
The manual's tip chart splits replacement intervals in two. The Orthodontic, Pik Pocket, Plaque Seeker and Toothbrush tips are marked for replacement every three months, while the Classic Jet tip and the Tongue Cleaner are marked every six. Not all of those tips ship with every model, so check the listing's component list against the chart.
Each tip has its own short technique note in the manual, and it says to use the Pik Pocket tip at the lowest pressure setting. Those notes, and the safety page that goes with them, belong in Waterpik's own document rather than in a summary here.
Tips lock into the handle and a button on the handle ejects them. The listing and Waterpik's page both describe a 360-degree rotating tip handle, and the manual's parts diagram names a rotating control knob above the tip eject button.
Cleaning, hard water and what not to put in the reservoir
The reservoir lifts off and is top-rack dishwasher safe, and the manual says to unplug the unit before wiping the body with a soft cloth and a mild non-abrasive cleaner. Mouthwash and antibacterial solutions can be run through it, and the manual says to rinse afterwards with warm water.
Hard water is the recurring maintenance job on this machine. The manual gives a white vinegar and warm water routine to run through the unit every one to three months; follow the printed proportions in the manual rather than guessing at them.
Two exclusions are worth noting before you improvise. The manual says not to use iodine or water-insoluble concentrated essential oils in this product and that doing so may void the warranty. It says the reservoir should hold water or a solution your dental professional recommends.
Power, safety limits and where to look things up
This is a North America only machine. Waterpik's page lists it as compatible with 120 VAC and 60 Hz outlets, and the manual warns that plugging the unit into a different voltage system will damage it and void the warranty. The manual also notes that the plug is polarized.
The manual sets a usage limit of no more than five minutes in each two-hour period and says the unit shuts off by itself after five minutes of continuous running. It also carries safety pages of warnings and cautions, which are worth reading in the manual rather than in any summary.
If the unit leaks from a damaged hose, the manual says replacement hoses and handles can be bought from Waterpik or a self-service repair kit requested from customer service. Serial and model numbers are on the bottom of the unit and the manual asks for them in any correspondence.
Three-year warranty, and the claims we are not repeating
Water Pik warrants the product to the original consumer against defects in materials and workmanship for three years from the date of purchase, and will ask for the original receipt and, if requested, the whole product. It replaces rather than repairs, provided the unit was not abused, misused, altered or damaged after purchase and was used with approved accessories.
The exclusions are specific. Accessories and consumable parts such as tips are not covered, installation is the consumer's responsibility, improper voltage voids the warranty, and the manual states in capitals that opening or disassembling the product for any reason voids it too. Waterpik's page and the listing both say three years.
Waterpik's product page carries a list of clinical and laboratory claims about plaque and gum health, each footnoted to studies held on file. We did not read those studies, so we are not repeating their figures here; if the claims matter to your decision, ask Waterpik for the underlying data or talk to your dentist.
Check the current listing
Confirm the model, included parts and availability before ordering.
Primary sources
- Waterpik WP-667 Aquarius product page
- Waterpik Water Flosser 600 Series owner's manual (Waterpik PDF on the listing)
Primary sources checked .
Compare with
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A bathroom with no free outlet by the sink but room for a countertop unit
Side-by-side pages, this model next to: Waterpik Cordless Pulse 3100 Water Flosser, WF-20CD010 (White), Waterpik ION Professional Cordless Water Flosser, WF-12CD010-1 (White).