The IceCap Flow Pump 200 (FP-200) is a magnetic-mounted wavemaker that delivers up to 4,755 GPH of fully adjustable flow for reef, saltwater, and freshwater aquariums. With five flow modes, a feed setting, and automatic night mode, it's a powerful, easy-to-tune way to eliminate dead spots and keep corals, fish, and plants healthy in tanks from roughly 22 to 105+ gallons.
Water movement is one of the most overlooked pillars of a healthy aquarium. Here's why flow matters, what the FP-200 does, and how to size and place it for your specific tank.
What Is the IceCap Flow Pump 200?
The IceCap Flow Pump 200 is a compact propeller-style circulation pump — often called a wavemaker or powerhead — that mounts to the inside of your aquarium with a magnet and pushes a broad, adjustable stream of water across the tank. It's the largest of IceCap's Flow Pump series (which also includes the FP-60 and FP-100), and it ships with everything you need to run it: the pump, power supply, and a flow controller. It's rated for both freshwater and marine aquariums.
Why Water Flow Matters
Good circulation does far more than make the water look active. In any aquarium, proper flow:
- Eliminates dead spots where detritus settles and fuels algae and nuisance nutrients.
- Boosts gas exchange at the surface, raising oxygen levels and helping stabilize pH.
- Keeps waste in suspension so your filter and protein skimmer can actually remove it.
- Feeds your corals. Reef corals rely on water movement to deliver food and carry away waste; the right flow is essential for color and growth.
- Distributes heat and additives evenly throughout the tank.
Features and Specifications
| Maximum flow | 4,755 GPH (fully adjustable) |
| Power draw | 35 watts max |
| Suggested tank size | 22 – 105+ gallons |
| Mounting | Magnetic; glass or acrylic up to 0.7" thick |
| Dimensions | 4 × 3.3 × 3.3 in (includes dry magnet) |
| Power supply | 100–240V input, 24V / 1.75A output |
| Includes | FP-200 pump, power supply, flow controller |
| Use | Freshwater & marine aquariums |
Five flow modes
The included controller offers five presets so you can match the water movement to your livestock: Pulsing, Constant Flow, Stream, Random, and Cycle. Pulsing and random patterns are especially good for reef tanks, where varied, chaotic flow keeps corals clean and healthy.
Feed mode, night mode, and controller lock
A 20-minute feed mode slows the pump so fish and corals can eat without food blowing around the tank. Night mode automatically drops the pump to its quietest, lowest setting when the controller senses low light, mimicking calmer nighttime conditions. A controller lock prevents accidental changes once you've dialed in your settings.
Secure magnetic mount
The pump holds firmly to the glass with a dry-side magnet and mounts on aquariums up to 0.7 inches thick, so it stays put where you aim it while keeping a slim profile inside the tank.
Link two pumps for wave action
Run two Flow Pumps together in a master/servant linkage and they'll alternate to create rolling waves across the tank — an easy way to build dynamic, natural-looking flow in wider aquariums.
How Much Flow Does Your Tank Need?
Flow is usually described as “turnover” — how many times your total water volume moves per hour. These are general starting points, not hard rules, since corals and fish vary:
- SPS-dominant reef: high flow, often around 30–40x turnover or more.
- Mixed and LPS/soft coral reef: moderate flow, roughly 20–30x, with gentler zones for delicate corals.
- Fish-only saltwater (FOWLR): around 10–20x is plenty.
- Freshwater and planted tanks: gentler movement, often 5–10x, avoiding strong currents that uproot plants or stress fish.
At up to 4,755 GPH, a single FP-200 provides serious turnover for tanks in the 22–105 gallon range — and you'll rarely run it at maximum. The point of a controllable pump is to dial it in: set it high for an SPS tank, or run it on a low pulsing mode for a planted aquarium. Larger or oddly shaped tanks often benefit from two pumps placed to cover both ends.
Rule of thumb: aim for even movement everywhere — you want to see all your corals' branches gently swaying and no debris settling in corners, without any single spot getting sandblasted.
Wavemaker vs. Return Pump vs. Gyre
These three move water very differently, and most reef tanks use more than one:
- Return pump: pushes water from the sump back up to the display. It provides some flow but its main job is circulation through your filtration.
- Wavemaker / flow pump (like the FP-200): lives in the display and generates the bulk of your in-tank movement in a broad, adjustable stream.
- Gyre pump: a wider, thinner pump that pushes a sheet of water along one wall to create a full rotating “gyre.” Great for even flow in some layouts.
The FP-200 is a versatile all-rounder: powerful enough for demanding reefs, yet controllable enough to run gently in a community or planted tank.
Placement Tips
- Aim across, not straight down. Point the pump along the length of the tank or slightly toward the surface to create broad circulation rather than blasting the sand or a single coral.
- Cover both ends. In wider tanks, place pumps on opposite sides and alternate them for varied flow.
- Keep the sandbed in mind. Mount high enough that you're not carving trenches in the substrate.
- Adjust as your tank matures. Corals grow and rockwork shifts flow — revisit your settings periodically.
Using the FP-200 in Freshwater and Planted Tanks
Strong, controllable flow isn't just for reefs. In a large planted or freshwater aquarium, gentle circulation improves gas exchange, distributes CO2 and nutrients, and helps prevent debris buildup. Run the FP-200 on a lower constant or pulsing setting and position it to avoid uprooting plants or pushing fish around, and you'll get healthier plants and cleaner water.
IceCap Flow Pump 200 — Frequently Asked Questions
What size tank is the IceCap Flow Pump 200 for?
The FP-200 is suggested for aquariums from about 22 to 105+ gallons, and its output is fully adjustable so it can run gently in smaller tanks or at full power in larger ones.
How much flow does the FP-200 put out?
Up to 4,755 GPH at a maximum draw of 35 watts, adjustable across five flow modes.
Can I use it in a freshwater or planted tank?
Yes. The FP-200 is rated for both freshwater and marine aquariums. In planted tanks, run it on a lower setting and aim it to avoid disturbing plants.
Does it come with a controller?
Yes. The pump ships with its power supply and a flow controller offering Pulsing, Constant Flow, Stream, Random, and Cycle modes, plus feed and night modes.
Can I link two pumps to make waves?
Yes. Two Flow Pumps can be set in a master/servant linkage so they alternate and generate rolling wave action across the tank.
Is it safe for glass and acrylic tanks?
Yes. The magnetic mount works on both glass and acrylic aquariums up to 0.7 inches thick.
Dial In Your Flow
The IceCap Flow Pump 200 is available at Marine Concept Supply, backed by expert support from real reefers. Order online or pick up at our shop in Wheeling, IL. Shop the IceCap Flow Pump 200, or explore more aquarium pumps & powerheads to complete your setup.
