Water changes

[Bankertanker]

I had a random thought,

Does anyone know in aquarium's like Sea world and other big aquariums, how often do they do water changes on their massive tanks?

 

[lapin]

Interview With Matt Wandell: Steinhart Aquarium, San Francisco

Interview and photography by Brett Bingman I travel for work and sometimes that travel happens around holidays. Sure, we’d all like to be with our families

reefs.com

I dont think he mentions water changes