ISTA Solution of CO2 Indicator

• Made with unique formula assures accurate CO2 level.
• Use only 1cc each time, and recommend to change solution each month.
• No need to add aquarium water.
• No need to change solution after water changing.

How to use :

1. Injecting 1cc of CO2 indicator solution to the cap of CO2 indicator. Adding aquarium water is not necessary.
2. Recommended period of solution change, once a month. Solution change at every water change is not necessary.

Specifications

Type: drop-checker indicator solution for measuring dissolved CO₂

Dose: 1 cc into the cap of a CO₂ indicator

Aquarium water: not needed — the solution goes in neat

Replace: about once a month; it does not need changing after a water change

What’s in the Box

The bottle of indicator solution. The CO₂ indicator itself — the glass drop checker it goes into — is sold separately.

Returns & Replacement

Returns are accepted within 7 days of delivery, provided the item is unused and in its original packaging. Manufacturer-sealed items cannot be returned once the seal is broken, and sale-priced items are not refundable.

If your item arrives defective or damaged, message us on WhatsApp with your order number, or email us if you would rather, and we will replace it. Approved replacements are delivered within 3 to 5 business days. Transit damage is covered by insurance on every shipment. If tracking shows delivered but nothing reached you, tell us within 72 hours, which is the reporting window Indian couriers allow. Damage caused during installation or use is not covered; replacement spares for such cases are chargeable.

Full terms are on our Cancellation & Returns page.