Brightwell Aquatics Alkalin8.3 Reef Buffer PH Stabilizer, 1 L, concentrated KH buffer
Brightwell Aquatics Alkalin8.3 Reef Buffer PH Stabilizer, 1 L, concentrated KH buffer
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Brightwell Aquatics Alkalin8.3 Reef Buffer PH Stabilizer, 1 L, concentrated KH buffer

Where Brightwell Aquatics Alkalin8.3 Reef Buffer PH... fits in your dog's day
Three short notes on who this product suits, how owners use it and what they keep an eye on, with your vet as the person to ask about health questions.
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1Who it's for
Owners who want everyday gear that fits their dog's size and makes walks, meals and rest at home simpler to manage.
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2How to use it
Compare the size or capacity details with your dog's measurements.
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3What owners notice
Owners look at how the item fits into the daily routine and how well it holds up after several weeks of regular use on walks, at meals and at home.
About this product
Dose Brightwell Aquatics Alkalin8.3 at up to 5 ml a day into a 30-gallon aquarium until alkalinity reads 7–12 dKH, then keep dosing daily or weekly for maintenance. This 1 L liquid aquarium water treatment is a concentrated KH buffer that raises alkalinity and adjusts pH to 8.3 as a multi-component automatic buffer. A carbonate source is part of what the bottle delivers, and the liquid carries no phosphates, no silicate and no organic materials.
| Model | ALK1L |
|---|---|
| Item form | Liquid |
| Target audience | fish |
| Size | 1-L |
| Item dimensions (L x W x H) | 8.3 x 8.3 x 24.1 cm (3.3 x 3.3 x 9.5 in) |
| Item weight | 1.09 kg (2.4 lb) |
| Included components | Alkalin8.3 |
| Specific uses | Coat |
Dosing Alkalin8.3 into a reef tank
Add no more than 5 ml of Alkalin8.3 per day to a 30-gallon aquarium, and continue until alkalinity sits where you want it between 7 and 12 dKH. A test kit is needed for accurate dosing, so the reading decides when to stop the daily build-up.
Once the target is reached, dose as needed to hold it, either daily or weekly. For ongoing maintenance the buffer is intended to keep alkalinity between 7.5 and 9.5 dKH.
What the concentrated KH buffer contains and what it does
Alkalin8.3 is a multi-component automatic buffer that raises alkalinity and adjusts pH to 8.3. It provides a source of carbonates.
Phosphate, silicate and organic material are not part of the formula. Brightwell Aquatics describes it as addressing pH and KH instability that comes from poor salt mixes and from buffering products that do not hold. The 1 L bottle weighs 1.09 kg and measures 8.3 x 8.3 x 24.1 cm.
Questions about dosing and use
How much Alkalin8.3 goes into a 30-gallon tank?
Up to 5 ml per day, added until alkalinity reaches the desired level of 7–12 dKH.
How do I know when the alkalinity level is right?
With a test kit; accurate dosing depends on testing the water rather than guessing.
What alkalinity does Alkalin8.3 maintain after the target is reached?
Between 7.5 and 9.5 dKH, with dosing as needed daily or weekly.
Does Alkalin8.3 add phosphates or silicates?
No. Phosphate, silicate and organic material are absent from the formula.
What does the 1 L bottle contain?
1 L of liquid Alkalin8.3 concentrated KH buffer, listed as the included component.
Product details
| Brand | Brightwell Aquatics |
|---|---|
| Product type | Aquarium Water Buffer |
| Department | Brightwell Aquatics Canada |
| Sold by | DogJointly, operated by YALEO LLC |
| Delivery | Free standard US delivery, usually 7 to 14 business days after 1 to 3 days to prepare |
| Returns | 30 days on unopened items in their original packaging, with damaged or wrong items covered at our cost |
Delivery and tracking
Standard delivery is free to every US address, we prepare orders in 1 to 3 business days, delivery usually takes 7 to 14 business days, and the tracking link arrives by email when the parcel ships.
Returns and refunds
You can return unopened items in their original packaging within 30 days of delivery. Damaged, faulty or wrong items are replaced or refunded at our cost, so please read the refund policy and contact us before you send anything back.
How Subscribe and Save works
Choose the subscription option above the cart button to receive this product on a regular schedule at the lower subscription price. You can skip a delivery, change the schedule or cancel from your account or by writing to support@dogjointly.com.
Multi-buy savings
Pick 2, 3 or 4 units in the quantity cards to save 10, 15 or 25 percent on the item price. The saving is shown in the cart before checkout, so you can compare the total with a single unit.
Labels, ingredients and your vet
Ingredient lists and serving tables can change between batches, so the label on the pack you receive is the reference to follow. Please ask your vet before starting a supplement, especially for a senior dog or a dog on medication.
Questions about this product
Is Brightwell Aquatics Alkalin8.3 Reef Buffer PH Stabilizer, 1 L, concentrated KH buffer available in the United States?
Yes, it is in stock at DogJointly and ships free to US addresses, usually within 7 to 14 business days after 1 to 3 days to prepare.
How should I compare Brightwell Aquatics Alkalin8.3 Reef Buffer PH... with similar products?
Compare the brand, format, serving table and pack size in the details above with similar items in Brightwell Aquatics Canada, and check the choice with your vet.
Where can I find delivery and returns information?
Delivery and returns are summarised on this page and set out in full in the shipping and refund policies linked in the footer of every page.
Guides and order help
Reading that helps you compare products, plus the pages that answer delivery and return questions.










