T5 tubes run for an awfully long time. After 10,000 hours of use, it’s recommended to replace them, though, in order to maintain strong, efficient light output at the correct colour intensity. If your Micro Growlight Garden needs some help, just order a T5 Replacement Tube for Micro Growlight Garden and renew to its original strength. These tubes come packed in easy to ship plastic clamshell packaging, so they are available by mail order. We also stock them at our retail store in Ladner.