I'm old enough to remember the awful plastic plants that used to be on offer years back. Nowadays there are some really life-like and extremely beautiful fake plants.
But there's nothing like having a crack at the real thing. I'm certainly no aqua gardener and to get to the stage I'm at now has, at times, been frustrating to say the least. Below is a snippet of my 180g. Looks great but it's been quite a journey to get to this stage.
Yes, they will take up a little nitrate. Yes, bits break off which, if left, can clog up filters and/or foul the water. Yes, some fish will frustrate the hell out of you by constantly picking at them. Yes, algae can grow on them, made worse if your lighting is too strong/on too long, or you have a nutrient imbalance etc.
If I was you I'd start off with no lofty expectations. Take it slow, do lots of research on lights and substrate. I'd stay clear of CO2 at this stage, maybe something for the future if you really get into it.
Try lots of plants, most will die, but some will do ok. And give them time. Most will look like they're dying back at first, this is common.
If all else fails, and you really struggle with live plants, then there are those great looking modern fake plants to fall back on.
Good luck.
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