Brightwell Aquatics Alkalin8.3 is a concentrated, multi-component liquid buffer that raises and stabilises alkalinity (KH) and pH in reef and marine aquariums. Stable alkalinity is the single most important parameter for healthy coral growth – Alkalin8.3 makes it easy to hit and hold your target.
Key benefits
- Highly concentrated – 1 ml raises alkalinity in 1 US gal (3.8 L) by 3.1 dKH (1.1 meq/L); Brightwell rates it over 50% stronger than most competing buffers.
- Multi-component formula – bicarbonate, carbonate, borate and sulfate salts for balanced buffering, not just plain soda ash.
- Stabilises pH – removes pH and KH swings caused by weak salt mixes or poor buffers.
- Pure – free of phosphate, silicate and organic material.
- Liquid form is ideal for dosing pumps; pairs with Brightwell calcium and magnesium supplements.
How to use
- Test alkalinity first. Target range: 7–12 dKH (keep it stable).
- If below 7 dKH: up to 5 ml per 10 US gal (approx. 38 L) per day until you reach target.
- Maintenance: 5 ml per 30 US gal (approx. 114 L) per day, adjusted to your tank's consumption.
- Add to a high-flow area or dose via a dosing pump. Do not add at the same spot and time as calcium supplements.
Specifications
| Brand | Brightwell Aquatics (Made in USA) |
| Size | 1 litre |
| Suitable for | Reef and marine fish aquariums |
Shipped across India from Chennai by Indian Aquarium (Astra Aquatics).