LOW-Light Plants

Background info:
My tank is a 40g breeder with a 1.5 inch sand bottom, no root tabs, and regular doses of flourish according to the bottle. 4 months ago I purchased some pennywort and water wysteria for the tank. I had a turtle in the tank before considering a live plants and fish setup, so I've been using the 24" reptisun terrarium hood with a 24-watt T5 HO bulb from back then.

My Present Dilemma:
My water wisteria has finally died after a rough 4 months of slow decay, and my pennywort is alive, but not flourishing per se. The lighting isn't that bright in the tank, and after using a calculator today it came out to .5 watts per gallon. Sooo I was gonna purchase some java moss, anubias nana, and java ferns to go in the tank, but after my discovery i'm a bit nervous. Could they survive in this level of low lighting? If not i'll cave and just purchase a brighter light.

This is my first tank and I didn't think to calculate the light level before ever purchasing the plants Rookie mistake!
Any advice is greatly appreciated! Any other plant recommendations would be very helpful as well. Thank you all

 

I would just go with a good set of LED's from amazon. So many cheap options and will just make life easier. Not only will it let you grow awesome plants but it will make your tank and fish look better too.

 

How old is the bulb? The moss is the only one i would be worried about, but if the bulb is pretty old, it could have a pretty degraded output and needs replacing. It might be a good time to consider cost of upgrading vs buying a new bulb if that's the case.

 

I've has anubias and Java fern survive and grow (slow growth) in just room lighting.

 

How old is the bulb? The moss is the only one i would be worried about, but if the bulb is pretty old, it could have a pretty degraded output and needs replacing. It might be a good time to consider cost of upgrading vs buying a new bulb if that's the case.

The bulb is just over a year old, though it hasn't been used more than 6 months.