4' Potency Plus T-8 UVB tubes produce 15% UVB spectrum. The only effiicient source for UVB other than the sun. Increase your THC levels 20-25% during the Flower Stage with these Supplental lights.
Potency Plus UVB t-8 tubes 4'
Hassle-Free Returns
We offer hassle-free return shipping in the U.S. if you are not 100% satisfied for any reason. Many brands have a 90-day return policy. See our entire Return Policy for rules and guidance on returning an item after purchase and for brand-specific return dates. A 10-20% restocking fee may apply for returns within the dates of the return policy.
We are based in Portland, Oregon with warehouses nationwide. We offer FREE shipping to the contiguous 48 states via FedEx, UPS, or USPS for orders over $100.00 USD. Expedited shipping is usually available for an extra cost. Contact us before your purchase if you prefer an expedited shipping method.
After the order is processed, allow 2 to 10 business days for the product(s) to reach you if shipped to a U.S. address. We can ship to PO boxes, except when shipped via UPS.
Shipping to Alaska and Hawaii may warrant additional shipping charges. If ordering from Alaska or Hawaii, an invoice will be sent to you after your order is received to cover the additional charges. Or, if you are from one of these states, you may contact us for a shipping quote before your purchase.
Free shipping is not available on products that require a quote.