CrystalClear KoiAir 2
#9 in Bubbler kitsFull review
A small-pond air pump kit rated for 16,000 gal for a koi or backyard pond: it runs all year, adds oxygen from the bottom and keeps a hole open in winter ice.
Amazon $549.99$549.99
The CrystalClear KoiAir 2 is the better pond aerator overall, rated 2.8 to 2.6. The CrystalClear KoiAir 2 leads on value. The The Pond Guy Pond Aerator 2 costs $270 less ($279.99 vs $549.99).
Prices were last checked November 4, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
The Pond Guy Pond Aerator 2
#11 in Bubbler kitsFull review
A small-pond air pump kit rated for 6,000 gal for a koi or backyard pond: it runs all year, adds oxygen from the bottom and keeps a hole open in winter ice.
Amazon $279.99$279.99
Which should you buy?
- Choose the CrystalClear KoiAir 2 for value ($34.37 per 1,000 gal rated ($549.99) vs $46.66 per 1,000 gal rated ($279.99)).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every bubbler kits pond aerator; a clear win is highlighted. How we rank explains each one.
| Factor weight | CrystalClear KoiAir 2 | The Pond Guy Pond Aerator 2 |
|---|---|---|
| Overall rating | 2.8/5 | 2.6/5 |
| Value 35% | 46 $34.37 per 1,000 gal rated ($549.99) | 33 $46.66 per 1,000 gal rated ($279.99) |
| Output 20% | 50 airflow not published (neutral score used) | 50 airflow not published (neutral score used) |
| Efficiency 20% | 50 airflow or watts not published (neutral score used) | 50 airflow or watts not published (neutral score used) |
| Warranty 25% | 0 warranty not published, scored as none | 0 warranty not published, scored as none |
Specifications
| CrystalClear KoiAir 2 | The Pond Guy Pond Aerator 2 | |
|---|---|---|
| Aeration | ||
| Rated for | 16,000 gal | 6,000 gal |
| Maximum depth | 4 ft | 4 ft |
| Power | ||
| Motor | - | 17 W |
| In the box | ||
| Diffusers | 2 | 2 |