September 27, 2021 Claude Gamble aquatic gallon seahorse tank September 27, 2021 5+ Articles About 55 Gallon Seahorse Tank [Latest Update 2021] 8+ sources for 55 gallon seahorse tank There are many advantages to adding a sump to your seahorse setup. 10 gallons for 2 to 4 individuals 25 gallon for 4 …