yeah if its new it really could be just emersed leaves dyingI previously asked how long you have had this plant... ?
I do use root tabsAre you using root tabs? Sword Plants are root feeders. There is also often an adjustment when you add one to a new tank. The old leaves will sometimes die and need to be cut away and the new leaves will be healthier.
I’ve had it for about a month and a halfI previously asked how long you have had this plant... ?
It’s planted in gravel. Just normal glo fish gravel I got for a LFS store a while agoSubstrate, gravel. What is the sword plant planted in
I’ve had it for about a month and a half
OK. This likely is a case of the outer emersed leaves dying off as the new submersed leaf forms grow from the centre of the crown. Sword plants (genus Echinodorus) are usually grown emersed (roots in wet substrate, leaves in the air) by nurseries because it is les expensive and faster. Once planted submersed, the existing leaves slowly die off as new growth emerges from the crown, and you will see the leaves will be slightly different in shape (and internal/external composition too).
The gravel is a bit large, but I would not expect this to be the issue here. Roots grow easier in fine-grain substrates like sand, or fine gravel. Substrate tabs do make a big difference with swords as others noted.
What size gravel is a good size for them? I'm looking at getting one and some crypts. Just checking if I should be buying some finer gravel for those parts of the tank.