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com.laguniahop.h6q4p8.app
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This app disappeared from Google Play on 2026-11-13. Below is the last data we saved.

1+
installs · ≈3
—
0 ratings
2026-10-22
first release
2026-10-22
last update

Description

Aquarium water volume and water change calculator with dose amounts

The number printed on an aquarium's box is not the number you dose against. Gravel, sand, rock and the gap between the rim and the waterline all take their share, and the water that actually sits in the tank is always less than the label promises. Lagunia Hop works out that real figure for you, then turns it into the two numbers a water change actually needs: how many liters to replace, and how much of each treatment to add. Start by entering a tank's length, width and water height, then the displacement taken up by substrate and decor. From those measurements the app calculates the net volume — the water genuinely in the tank, not the manufacturer's rounded capacity. Every tank you set up is saved as its own chip, so a shrimp bowl, a planted display and a quarantine tank each keep their own dimensions and their own math. Hop between the chips and the figures follow along. With the volume settled, drag the change-percentage slider and read off the result. Twenty percent, thirty, whatever your routine calls for: the exact liters to pull and refill appear as you move the slider, alongside the per-treatment dose for every product you have enabled on that tank. Conditioner, fertilizer, buffer or anything else in your rotation gets its own amount scaled to the water being replaced, so you measure once instead of guessing from a bottle label written for a tank that isn't yours. Saving a change writes it into that tank's maintenance log. From then on the log answers the questions that are easy to lose track of across several tanks: how many days since the last change, how much water has been replaced in total, and how much of each treatment has gone in over time. A bar chart of change sizes sits alongside the totals, so a long stretch of small changes or a single oversized one is visible at a glance rather than buried in dates. The result is a record that matches what you actually did, tank by tank, and a calculation you don't have to redo with a tape measure and a calculator every weekend. Set the dimensions once, pick a percentage, and get on with the change.

What's new

Lagunia Hop

Details

Version1.0
Minimum Android version7.0
Reviews0
Available inworldwide (235)
Developer contactson the Business plan
Collected2026-11-12

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