The Drip Acclimation Method, Step by Step

Why floating the bag isn't enough

Temperature-only acclimation (floating the bag 15–20 minutes) ignores salinity, pH, and other chemistry differences between your shipping water and your tank — differences that can be significant enough to shock a fish even when temperature matches perfectly.

The drip method

1. Place the fish (in its bag water) into a clean bucket.
2. Run airline tubing from your tank to the bucket, with a valve or knot to control flow to a slow drip (roughly 2–4 drips per second).
3. Let your tank water slowly mix into the bucket over 30–60 minutes, gradually matching parameters.
4. Net the fish out of the bucket water and into the tank — never pour the bag/bucket water into your tank, since it may carry pathogens or pests from the source system.

When to skip drip acclimation

For fish arriving in clearly poor condition (visible stress, low oxygen in the bag, long shipping time), a faster, more direct transfer with oxygen supplementation may matter more than slow chemistry matching — a stressed, oxygen-starved fish doesn't benefit from an hour-long drip. Use judgment on condition, not just a fixed protocol.

ReefMind's acclimation guide generates a specific protocol per species, accounting for your current tank parameters versus typical shipping water — useful when you don't know exactly what chemistry gap you're bridging.