You don't have a nylon washer? The regulator should have come with one. Even if you did buy the perma seal. Mine did. But anyway. Aquariumplants.com will ship one to you for free. Just the 4 bucks for the seal. They could get one to you in 2 or 3 days, not 2 or 3 weeks. Just a suggestion. http://www.aquariumplants.com/Perma_Seal_co2_cylinder_to_regulator_seal_p/perm1.htm
You should put a solid color background on your tank too. It will make the plants and fish stand out more. Black or light blue would be what I would do. Black if you plan on a jungle tank. Light blue if you go Amano or Dutch. Black always works though.
I think it did come with a nylon washer...so would it be fine to use that right now and then whenever I refill the tank switch out the seals? I will post a pic of what I think is the nylon washer! Thanks

Definitely needs a background! Really nice stand and hood. It will be a stunner I have no doubt!
Yes! For sure! I am planning on getting a black background the next time I go to either an arts/crafts store or petco...