It is a stock lid
20g long Baby Shark tank
10g Betta
In the planted world, high lighting is like double/triple bulb units or 2 led strips. It's a lot more than I bet you have or care to spend the money on.
As far as grassy plants go... You are probably thinking of dwarf hair grass. It is far from a beginner plant. Most carpeting plants need a lot of light and co2. If you wanted to try your hand at an easier "carpeting" plant. I would suggest Staurogyne Repens. They are not too difficult. With some DIY co2 and some fertilizers I'm sure they would be just fine.
If all that overwhelms you then we need to take a step back. There is plenty of low light plants that don't even need co2 (though it's always helpful).
Water sprite
Java moss(tie to rock or DW)
Christmas moss
Anubias(not planted)
Java Fern (not planted)
Bacopa caroliniana
Some Cryptocoryne species(root tabs)
Amazon swords(root tabs)
Hand slipped and hit reply, will resume my post. Please hold.
Ludwigia Repens(reddish plant)
Wisteria
Hornwort (not planted, hold down or float)
All of those plants will grow with simple fertilizers and some root tabs. Easy peasy if you have a decent light. Finnex is a great brand for planted tank lighting and is on the cheaper side while still holding quality over quantity. I have a 48 inch planted plus myself.
The plants that are not planted can be tied down to rocks or driftwood and feed off the nutrients in the water.
What are root tabs? Root tabs are used by heavy root feeding plants. They take in most of their nutrients through of course the root system. You just bury the tablet underneath the required plant once every 1-2 months.
Fertilizers and co2 is where the money comes in with planted tanks$$$$$ if this is a small tank under 20g I recommend just using liquid ferts. (API Leaf Zone and Flourish + Excel) 30+ gallons I recommend dry fertilizers like PPS Pro. Dry ferts are much more cost effective because larger doses for larger tanks.
There is TONS of DIY videos on YouTube of co2 using yeast and stuff. I'm not going to go into detail with it.
I hope I haven't overwhelmed you! I tried to be as simple as possible.
Caleb
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