Free Tools for Your Aquarium
Calculators and diagnostics we use every day in the hobby. No sign-up, no cost.
Tank Volume Calculator
Gross and net volume for your aquarium in liters and gallons.
Parameter Diagnosis
Traffic-light status for your key reef aquarium parameters.
Salt Dosing Calculator
Grams of reef salt needed to reach your target salinity.
Water Change Calculator
Liters to change and resulting nitrate estimate.
Why Trust Ask Yaro?
More than a generic AI, an ally that actually knows aquariums.
15+ Years of Real Experience
Ask Yaro is trained on knowledge built over 15+ years helping real aquarists, not just generic information from the internet.
Answers with the Why
We don't just tell you what to do: we explain the reasoning behind every recommendation so you actually learn.
Remembers Your Aquarium
Ask Yaro keeps track of the history and parameters of each of your aquariums to give you truly personalized advice.
Risk-Free Trial
7 days free, no card required. Cancel anytime.
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What Ask Yaro Users Are Saying
Real aquarium hobbyists, in different countries, getting their questions answered
"I started my first planted tank two months ago and used Ask Yaro almost daily to understand CO2 and fertilizer dosing. I don't ask as much anymore, but early on it saved me from killing a few plants."
"I've been trying the app out for a couple weeks and honestly it works better than I expected. I uploaded photos of my plants and it helped me spot an iron deficiency I hadn't noticed."
"I'm new to this, and whenever something looks off in the tank I ask Ask Yaro before I panic. It explains the why, not just the what, and that's helped me actually understand the process."
"I manage three different tanks and I don't have to keep it all in my head anymore. I log each one's parameters and Ask Yaro tells me if something's drifting out of range before it becomes a problem."