Having some red in the Fireplace Aquarium gives some nice contrasting colours. I picked up some AquaFleur Rotala rotundifolio ‘Blood red’ to see how that would do.
Red aquarium plants
There are lots of good choices to provide some red colour in a planted aquarium. I had very good success previously with Ludwigia palustris mini ‘Super Red’ which grew as an intense dark red but is a fast-growing stem plant that requires a lot of trimming. Another classic choice are various Alternanthera varieties. I have tried many including Alternanthera reineckii ‘Rot’, Alternanthera reineckii ‘Mini’, Alternanthera reineckii ‘Rosanervig’ and most lately Alternanthera cardinalis variegata. Unfortunately, amano shrimp think Alternanthera species are delicious, which is problematic for these plants. I also had a go with Cryptocoryne wendtii ‘flamingo’ which is supposed to be spectacular, but for me was pretty much just dark green. Cryptocoryne petchii ‘Pink’ also didn’t really pink up at all in my setup.