Observed arrival · 2026-11-04
HappyFishTank’s aquarium planner
An interactive aquarium planner checks water conditions, bioload, space, equipment and tank-mate compatibility, with a 3D model of the tank.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Aquarium keepers checking stocking and compatibility
- Worth noticing
- Compatibility uses directed pair rules, and the site says a single blocker cannot be averaged away.
Field notes
The planner distinguishes ideal water-condition bands from tolerated ranges and checks whether species’ bands overlap. Its bioload explanation uses body mass and warmth, while the space check accounts for different needs such as floor area for bottom dwellers and height for tall fish. The page presents these as parts of its model; the supplied evidence does not independently establish their accuracy.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
⊠LoginAccess appeared gated
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
ƒJavaScriptBrowser-side code central
One card from the complete issue