Fritz-Zyme TURBO START #900 FOR SALTWATER

TURBO START #900 guarantees users rapid ammonia and nitrite reduction in new tanks or emergency situations. The most popular product for inoculation of professional aquaculture and zoo aquariums, TURBO START™ #900 recently became available to fish stores for in-store use and for re-sale. Hobbyists love it; no one wants to wait 6 weeks to add colorful, active, full size saltwater fish. Up to 3 ppm of ammonia can be fully cycled in less than 5 days.
Aquarium owners are often confused as to which product is really best for their application. Often described as “biological additives”, “beneficial bacteria” or “assisting in ammonia and nitrite control," many competitive products contain Bacillus sp. bacteria and not true nitrifiers. Users expecting rapid ammonia reduction are disappointed with little change in "cycling" time when using other products.
I'd still go slow and keep testing. It needs to be shipped overnight and stored in fridge or else the bacteria dies off