SimReef
A practice tank that behaves like a real one. Dose too hard and alkalinity spikes. Skip water changes and nitrate climbs. Add a tang to a 60-litre nano and watch what happens — with no livestock at risk and no money on the line.
It runs on the same engine that scores your real tank, so what you learn here transfers directly. Included on every plan.
Run a month of tank chemistry in a few minutes and see where a dosing plan ends up before you commit to it on a live system.
The alkalinity swing that would burn tissue on a real SPS colony is, here, just a lesson with a chart attached.
Planning a new dosing regime or a big stocking change? Try it on the sim first and see the shape of what follows.
Every paid feature is unlocked until 31 December 2026. Tell us what breaks and you keep Reef+ for a year after that.
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