Is this really the Pro version?

This is one of those instances in which Amazon has it wrong. Do an online search and you will quickly discover that you can buy the PRO version of the Hydro IV Sponge Filter from another highly reputable source for less money and without the ridiculous $5.99 shipping fee.

The reviews are conflicting - I see some people mention these are pro filters with the reticulated sponge while others mention they are. What is it?

these are NOT the pro version; those are not sold on Amazon for obvious reasons by the manufacturer these sponge filters would be the equivalent of the blue or white sponge mat filters used for canisters but e bit finer pores.

will the top lift tube fit an Aqua Clear 20 or 40 Powerhead intake?

The Hydro Sponge uses a standard 1" lift tube for all size sponges, exactly the same size used on most under gravel filters. I checked reviews on Amazon for the Aqua Clear 20, and many users report using the Aqua Clear to power their under gravel filter, so I believe the Aqua Clear powerhead would also fit on a Hydro Sponge. I use the Hydro Sponge V "Pro", which uses a special reticulated sponge which resists clogging. The standard filters (non-Pro) have a finer pore structure, so need to be cleaned more often (how often depends on how dirty your fish are, but monthly would be a good place to start). The same company also makes "Filter Max" filters which use the same sponges, but have plastic elbows and several adapters to fit a wider range of powerheads and other water pumps. These might also fit, especially if you removed the plastic cone from the intake of your Aqua Clear.

If i put 6 of them in a 600 gallon pool plus the original pool filter would that be enough ?

I have never dealt with that volume of water but these are really good sponges, I have to guess that 6 would do a good job but make a lot of surface agitation

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🧽 Elevate your aquarium’s clarity with effortless, pro-level filtration!

VERSATILE COMPATIBILITY - Works seamlessly with power heads, giving you customizable water flow and enhanced filtration efficiency.
USER FRIENDLY MAINTENANCE - Easily removable sponge design means quick cleaning—spend less time on upkeep and more time enjoying your aquarium.
DUAL ACTION FILTRATION POWER - Combines biological and chemical filtration to maintain crystal-clear, healthy water for your fish and plants.
TAILORED FOR 10 GALLON AQUARIUMS - Perfectly sized for small tanks up to 37.85 liters, ensuring optimal filtration without overpowering your aquatic setup.
ELEVATED DESIGN FOR CLEANER WATER - Raised off the tank bottom to prevent debris buildup and promote better water circulation, keeping your aquarium pristine.

The Hydro-Sponge Filter I (HS910) is a compact, efficient filtration system designed for aquariums up to 10 gallons (37.85 liters). It delivers both biological and chemical filtration, ensuring a healthy aquatic environment. Its easy-to-clean sponge and compatibility with power heads make maintenance simple, while the raised design optimizes water flow and cleanliness.

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Product Dimensions	13.46 x 10.67 x 10.16 cm; 249 g
Item model number	HS910
Size	I - Up to 37.85 liters
Number of Items	1
Quantity	1
batteries required	No
Batteries Included	No
Item Weight	249 g

Aquarium Technology, Inc. Hydro-Sponge Filter I--HS910 -

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