MACI Guides

The website guides. The books go deeper.

These guides do not replace the MACI books. They are meant to help you identify the starting point, avoid impulsive interventions, and know what to read next.

If you need the full framework, the nuances, the real cases, and the reason behind each criterion, continue with the MACI books.

MACI Guides

This section brings together aquarium consultation guides from the MACI criterion: clear, practical, and designed to help you decide before intervening.

Quick consultation before intervening

  1. What changed in the water, load, light, filtration, or routine?
  2. Is this a real emergency or an adjustment phase?
  3. What information is missing before acting?

Start with source water

Consultation map

Before the aquarium

Water, volume, filter, light, substrate, and first purchases.

Know your water

First stable aquarium

Cycling, resistant plants, first fish, and normal first-month mistakes.

Coming soon

Quick diagnosis

Gasping fish, cloudy water, algae, melting plants, and confusing values.

Coming soon

Water and parameters

pH, KH, GH, TDS, nitrate, phosphate, chlorine, and chloramine.

Coming soon

Plants

Functional plants, adaptation, light, and symptom reading.

Coming soon

Fish and biological load

Compatibility, margin, behavior, oxygen, and real system load.

Coming soon

How to use these guides

First read the system. Then choose a proportionate intervention. MACI guides are meant to reduce blind action, not to turn every aquarium into a rigid formula.