Super Red Mini Ludwigia..is Very Mini.

Its doing fine on no Co2,and it couldn't be redder. Only,every leaf has reduced to half the size they were when I got the plant. Originally it had been in not so bright growers tank and came with greenish leaves mostly. It soon shed those leaves and grew these red tiny leaves..very airy and open growth. Reminds me of a Maidenhair fern over all in form.
I'm not sure if they will increase in size as the stems do..but so far after 2 months,nothing is changing from the tiny leafed form.