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Unlimited Power! Aquael Hypermax 4500 BT for a Waterbox 4820

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I really, really value optionality in flow, along with high overall turnover on all of my tanks and the ability to easily adjust flow up or down as the system evolves.

My tank is currently running an Aquael Ultramax 2000, a Sicce surface skimmer, and a small Sicce wavemaker. The setup is absolutely up to the task as‑is, but my goal is to consolidate everything into one primary piece of equipment driving all flow and filtration into the tank. I will be re-using the filter and skimmer on a new tank. I hope to draft a journal for that shortly.

The Hypermax, with its 2×2 inlet/outlet configuration, is effectively ideal for this. It provides:
  • Extremely high potential flow
  • A high degree of flexibility in inlet/outlet placement
  • Enough headroom to absorb real‑world flow losses from running inline CO₂ and inline heaters (one heater on each outflow line)
I will be running Week Aqua stainless steel 20 mm lily pipes, with one outflow incorporating a surface skimmer, which eliminates the need for a dedicated, standalone skimmer. I’m particularly curious to see where the final operating flow rate lands after accounting for real losses. By comparison, my Ultramax experienced roughly a 30% reduction from rated flow. A bucket test showed about 350 GPH from a 500 GPH rating, which reinforced that the key constraint is not restricting the filter inlets—hence Aquael’s included (admittedly unattractive) radiator-style intake guards. I do worry a bit about the Week Aqua inlets, and can pivot to a different stainless intake that has a wider inlet.

Filter Impressions​

Simply put, this filter is a monster. The media capacity dwarfs anything I’ve used before. Aquael includes an almost obscene amount of ceramic rings and activated carbon. I won’t be using either; instead, I’m reusing the established biological media from the Ultramax, along with the included sponges, plus one additional basket dedicated entirely to sponge. The prefilter basket is also about the perfect size and very well thought out.

My major drawback so far is head removal and reassembly. Aligning the baskets correctly, seating the head, and locking it all in place is somewhat finicky. The first attempt took me close to 10 minutes. I expect that to drop to ~2 minutes with familiarity, but it’s still more effort than ideal. Closing the clasps also requires a surprising amount of pressure.

That said, the saving grace is that the prefilter is extremely easy to access, and realistically, it should be the only component requiring regular maintenance every couple of weeks. That significantly reduces how often the full teardown will be necessary.

Inlet and Outlet Placement​

Filter inflow and outflow placement is below(Advice is welcome).

Back glass

Left Corner is filter intake 1
Right corner is filter intake 2
Right corner is filter output 2 that has the surface skimmer.

Front Glass
Left corner is filter output 1

The goal of outlet one to do uplift and inject C02 and some circular push. with outlets 2 skimmer doing some surface rotation and the more horizontal flow and in the future run the heater and mix the heated water when I use it in winter. I didn't want opposing jets as my tank has a large spider wood construct creating a front and back swim lane. For intakes I believe they will both be on debris paths. Happy for any clear feedback and if I may have made a mistake.


Will share early photos via an edit from my phone. Plus an update once installed.
 
I'm very interested! I'm considering this filter for a ~80Gal 120cm tank. I'm thinking this filter might be overkill for a tank of that size? Except for the ability to adjust the DC pump to my desired flow...

The included hose barb sizes is an unfortunate size, as 90% of what we have in this hobby is 16/22mm. Do you plan on stepping the hose size down to 16/22mm? Or using the included tubing?
 
I'm very interested! I'm considering this filter for a ~80Gal 120cm tank. I'm thinking this filter might be overkill for a tank of that size? Except for the ability to adjust the DC pump to my desired flow...

The included hose barb sizes is an unfortunate size, as 90% of what we have in this hobby is 16/22mm. Do you plan on stepping the hose size down to 16/22mm? Or using the included tubing?
That’s the same size tank as my Waterbox. It’s probably overkill, but with a variable pump I like the flexibility to ramp flow up or down to compensate for flow loss—especially if I add a Yuyang reactor, an inline BT heater, or potentially an inline auto-doser. The Aquael Ultramax is also dead silent, so the idea of a variable-speed pump that remains quiet is very appealing.

For plumbing, I run the larger 19/25 mm hose and use the gray silicone tubing from Aqua Rocks Colorado. It was initially a bit of a challenge figuring out sourcing, but Aqua Rocks is one of the few places that consistently carries fittings and accessories for that hose size. UNS also has a limited selection. For hard plumbing, there are two Chinese brands making glass lily pipes (Jardli and FZONE on Amazon), and I’ve found two solid stainless steel options—Week Aqua and ZLDR—available via AliExpress or Aquarocks. Among these, the ZLDR and Jardli pieces have the least restrictive intakes.

Based on several bucket fill tests I ran back in November while debating between 16/22 and 19/25 for the Ultramax 2000, the hose diameter and intake design are the real choke points when it comes to flow.
 
I really, really value optionality in flow, along with high overall turnover on all of my tanks and the ability to easily adjust flow up or down as the system evolves.

...

Filter Impressions​

Simply put, this filter is a monster.

Impressive! Only 3x the output of my Biomaster2 850 :LOL: Even both of my filters don't add up the output of your beast. Hope you will update how you like it after living with it for a while. As much as I love the ease of maintenance in a Biomaster, flow, honestly, is a bit bleh in large tank, and I've heard good things about the Aquael canisters.
 
@BranchScape You forgot to mention two of the best features of Aquael. Priming and silent operation. It's so good.
I got an Ultramax 1000 about 2 months ago for my 36 gal. and I love it.
Yeah I didn't mention noise on the Hypermax as I don't know yet but for the Ultramax 2k I told Rocco it is dead silent. I have never heard it.

Priming on the Ultramax is great as long as you don't restrict the intake, if you do with a restrictive glass pipe it's actually awful. This is more of an issue for the 2k then yours as the aesthetically pleasing 20mm pipe options are very limited. To make it painless I had to go back to stock until I found a better option than the F-zone glass inlet pipe I had at the outset.
 

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