Tetrapond Crystal Water

A 500ml pond water clarifier that clears suspended dirt for a cleaner, clearer pond

£18.87

How often?

£18.87same price, however often you have it

· tracked · UK mainland estimate · 14-day promise

UK delivery £2.99 · free over £39

Secure checkout by Stripe · Card, Apple Pay & Klarna

One thing worth knowing

This product treats cloudy water caused by suspended dirt — it is explicitly not for algae, so if your pond has gone green rather than murky, this isn't the bottle to reach for. Tetra also specify checking your pond's carbonate hardness (KH) is 6°dH or higher before dosing.

Secure checkout

Tracked delivery

Easy returns

Easy to use, made to last

Why we chose it

It solves one specific problem: cloudy water from suspended dirt. That's narrower than a do-everything pond treatment, but it means it actually works for what it's sold to do.

— Matt, founder

Specifications

Brand: Tetra

Full description

Cloudy pond water usually isn't algae — it's fine dirt particles suspended in the water column, and treating it as an algae problem is the reason some products don't work as expected. Tetrapond Crystal Water is built specifically to clear that dirt rather than to fight algae.

It works on suspended particles, pulling them together so the pond clears rather than staying hazy, and Tetra say it works within hours of dosing. It isn't suitable for use where sturgeon-like fish are kept.

500ML bottle
Clears suspended dirt particles for visibly clearer water
Works within hours of dosing
Not suitable for use with sturgeon-like fish
Should not be relied on to combat algae

One thing worth knowing. This product treats cloudy water caused by suspended dirt — it is explicitly not for algae, so if your pond has gone green rather than murky, this isn't the bottle to reach for. Tetra also specify checking your pond's carbonate hardness (KH) is 6°dH or higher before dosing.

Who it's for: pond keepers dealing with hazy, dirt-cloudy water who don't keep sturgeon-like fish, and who want a clarifier rather than an algae treatment.

Delivery

Tracked UK delivery — your estimated arrival date is shown above and updates automatically. Standard delivery £2.99, and free on orders over £39. Full details on our delivery information page. Delivery information

Returns

14 days to change your mind, no interrogation. Items need to be unused (sensory products unopened, for hygiene). Full details on our delivery & returns page.

Payment

Secure checkout by Stripe — cards, Apple Pay, Link and Klarna. We never see or store your card details.

Common questions

Will this get rid of green, algae-coloured water?

No. Tetra say it should not be used to combat algae — it's for clearing suspended dirt particles, not green water.

How quickly does it work?

Tetra say it works within a matter of hours.

Can I use it with sturgeon?

No, it's not suitable for use with sturgeon-like fish.

Is there anything I should check before dosing?

Tetra advise checking your pond's carbonate hardness (KH) is 6°dH or higher before each application.

How long does delivery take?

Your estimated delivery date is shown above and updates automatically. UK orders are sent tracked — standard delivery is £2.99, and free on orders over £39.

How do I track my order?

As soon as your order is dispatched we email you a tracking link, so you can follow it all the way to your door.

What if I need to return my order?

You have 14 days from delivery to change your mind. Just email us with your order number and we’ll send the return steps the same working day — see our delivery & returns page for details.

Why buy from Giddy Pets?

Carefully selected by pet ownersEvery product is chosen and quality-checked by people who actually live with dogs, cats and small pets.
Tracked delivery on every orderUK delivery with tracking as standard — and it’s free when you spend over £39.
UK customer supportReal, UK-based humans read every email — usually Matt, the founder. No bots, no ticket numbers.
Easy returns14 days to change your mind, no interrogation. If it’s not right, we’ll make it right.