Shoal & Stem
The Scaping Community

Shoal & Stem

Journal your tanks, track water changes, let Finn score your tank health, and connect with aquascapers who care about the craft.

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See how your tank is really doing

Track water parameters, schedule water changes, log livestock & plants, and let Finn score your tank health across 7 factors — all in one living journal.

Health scoring
Water change reminders
Livestock log
Photo journal
Add your tank

Free forever · Unlimited tanks

82%Healthy
CriticalConcerningNeeds AttentionGoodHealthyExcellent

Factor Breakdown

Stocking88%Bioload is well within capacity
Water Quality82%Parameters stable, pH on target
Equipment91%Filter rated for your volume
Maintenance80%Water changes on schedule, no overdue
+ 3 more factorsscored by Finn

Stocking Calculator

Check if your tank is overstocked

65%Balanced
UnderLightBalancedFullOver

20 gal · 4 species · Weekly changes

Find compatible species and let Finn weigh in with his expert take on your stocking plan.

Calculate your stocking

Free · No account needed

Ask Finn

Your aquascaping companion

What are you working on?
Diagnose algae & disease
Plan your stocking
Optimize your setup
Ask Finn

5 free questions · Unlimited with account

1
Start your journal
2
Ask Finn anything
3
Share with the community