ISTA Undergravel Filter

Features :

• Circulate the water under gravel layer in order to reduce the corruption of gravel.
• The gravel bed provides tremendous surface area for Nitrobacteria and keeps your water crystal clear.
• The filter plate can be connected with air pump, filter pump, submersible power head and hang-on filter to increase the circulation and help with mechanical and chemical filtration.
• Adjustable lift tube can be modified at your desire height. Silence design tube head can reduce noise.
• Air stones will not stock or collapse.

Instruction :

• Fully cover the bottom with the filter plate and cut off the spare part. Every plate can be connected with a tube, which can increase the water flow. Connect the tube with the filter plate and place gravel bed on top of it. Air stones can also be installed in the tube. Finally, add water into the tank.

Freshness & Storage

Every batch we dispatch carries a minimum of 6 months’ remaining shelf life. Store this product in a cool, dry place away from direct sunlight, with the cap or inner foil closed tightly after each use.

Filter media and substrates carry no manufacturing or expiry date. Their working life begins on first contact with water, not on the shelf.

Warranty & Support

This product is covered by warranty as per the manufacturer policy, against material and manufacturing defects from the date of purchase.

Warranty support is handled by us directly. Message our WhatsApp support with your order number and we will diagnose the fault first. Most cases are solved by replacing a single part, so you rarely need to send the whole unit. If the item does need to come back, it ships to our Delhi or Pune warehouse, whichever one served your order, and courier cost in both directions is borne by the customer. Your GST invoice is valid proof of purchase for the claim.

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 48 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.