I've been planning out an upgrade tank and still so much on my list: lights, rock, powerheads, and a new tank! Have been scouring sales and buying each piece i plan as they go on sale.
Tank set upbisbin progress. I would spend the money in a battery back up or a ATO system or even in a wave maker. These are all things I know I will need but do not have yet
Seeing as I just wrapped up a nice order with @SBB Corals from this current sale. I’d have to say I’d spend it on a fish. I need to add a couple more wrasses to the 80gal
Coral/Test kits! I just started adding coral to the tank and impulse control has been hard lol I also need to get some Hannah test kits to replace the Salfiert ones I have for nitrate and phosphate
I would put the $100 towards automation equipment such as Hydros. Being new to reefing, I want my tank as easy as possible to take care of (If there is such a thing).
I would purchase a new RODI filter set from Spectrapure for my 100 GPS ultra-high efficiency unit. The filters are currently on back order but that is definitely my next purchase in the hobby.