Rainwater and Aquariums

Author: Last updated:

Often collected for use in aquariums, rainwater is usually soft and slightly acidic, containing virtually no minerals. Many fish keepers consider rainwater to be a better source of water than tap water, which can contain many undesirable compounds. Unfortunately, rainwater has its own problems and should not be used for aquariums unless it is pre-filtered and supplemented with mineral additives.

Rainwater often contains atmospheric pollutants, has no essential minerals (buffers), and is subject to random events during collection (e.g. dead animals in guttering)


Click to read the Latest Tropical Fish discussions from Thinkfish users.

Think Fish Tropical Fish Forum
Tropical Fish Market Place
Fish of the month

Helping Fishkeepers With Their Fishkeeping Needs Since 2006