---
title: "Reviews — sponge filter with air pump - Flapen"
canonical_url: "https://flapen.com/research/us/pet-supplies/sponge-filter-with-air-pump/reviews"
last_updated: "2026-07-21T20:34:43.396Z"
locale: en
meta:
  description: "Niche score 45/100 · $124K/yr market · 116K searches/yr · $19.82 avg price. Doesn't clear our bar today. Data updated Jul 2026."
  "og:description": "Niche score 45/100 · $124K/yr market · 116K searches/yr · $19.82 avg price. Doesn't clear our bar today. Data updated Jul 2026."
  "og:title": "Reviews — sponge filter with air pump - Flapen"
---

# **sponge filter with air pump**

**Skip it**

Brand-locked demand (top 5 brands take 94% of clicks) — this niche doesn't clear our bar today.

Market size 28Growth 21Conversion 62Competition 58Returns 62Price range 74Avg price 87Brand share 15Review moat 22Quality gap 57

**Avg price**

**Great****$19.82**

avg listing price — sweet spot $15–$100

**Price range**

**Good****$4.87–$43.44**

cheapest to priciest tracked listing — scored on the share inside $15–$100

**Conversion**

**Good****5.4%**

search→purchase rate — share of searches ending in a sale

**Returns**

**Good****2.5%**

return rate — above 6% kills the launch gate

**Competition**

**Good****50%**

top-5 click share — leaders hold, buyers still browse

**Quality gap**

**Good****4.4★**

avg incumbent rating — lower means beatable quality

**Market size**

**Okay****$124K**

$124K/yr · 116K searches

**Review moat**

**Bad****9,674.63**

avg incumbent reviews — the moat a new listing must climb

**Growth**

**Bad****-7.8%**

90-day search growth — must beat 0% to launch

**Brand share**

**Bad****94%**

top-5 brand share — brand-locked demand