System sizer · planning estimate

Tell us your tank. We'll spec the system.

Volume and what you're keeping, turned into a light count, flow target, return pump, skimmer, heater and the automation worth adding — no overbuying.

Estimate only — built from common reef rules of thumb. Want a second opinion? Tell us your tank and a reefer will dial it in.

Tell us the tank on the left and your spec appears here —
lighting, flow, filtration, heater and the automation worth adding.

COUNSEL

"We'll talk you out of overbuying. Trust is the actual product."

— the rule every product page is written by

Have a reefer spec it for you
YOU SAY"40-gallon mixed reef, just getting flow sorted."
WE SAYA single gyre on a controller covers it — random flow without a powerhead in every corner.
YOU SAY"The estimate says two LED bars — is that overkill?"
WE SAYOn an SPS build, no — even PAR across the footprint beats one bright spot. Soft-coral tank? One bar is plenty.