When it arrived via Amazon Prime it didn't have a screw cap. it was only sealed with paper taped to the lip, which had to be supported by a screw cap. Luckily the seal was strong enough not to leak in transit and a standard pool chlorine screw cap will fit.
π Seachem Prime: Powerful Chemical Remover and Detoxifier for Fresh and Saltwater Aquariums
5 Review
π Tetra 16172 AquaSafe Fish Tank Water Conditioner: Safe & Effective Treatment for 8.45 fl oz Aquariums
3 Review
π API Stress Coat Water Conditioner | Tap Water Safe, Repairs Fish's Protective Coat, Use for Water Changes, Adding Fish, and Injuries
9 Review
TetraFauna AquaSafe Conditioner Reptiles Amphibians
6 Review
Efficient 2-In-1 Magnetic Fish Tank Cleaner With Non-Slip Design And Scratch-Free Blades
37 Review
Jasonwell Magnetic Aquarium Fish Tank Glass Algae Cleaner - Floating Brush (L Size)
37 Review
Steam cleaner Deerma Deerma DEM-ZQ610 EU, white/red
68 Review
𧲠Efficient Magnetic Fish Tank Cleaner: KEDSUM Floating Clean Brush with Handle Design
34 Review