I have a heated, filtered 5 gallon with my betta and 2 otos. There are 2 live plants currently (anubias nana and one moss ball). I am planning to order 6 or so other plants online (java moss, anubia coffeefolia, bacopa, duckweed, monosolenium tenerum, Lindernia rotundifolia, or ludwigia, maybe a java fern). My questions is: when all these plants get here and are ready to go in the tank, can I plant them all at once? Will this upset the water parameters for my fish?
If I were you I would put them in QT for a few days in some conditioned water and sit them were they can get some sunlight and check each day for snails or other hitchhikers. Then I would plant just a couple at a time each day till they are all planted. Good luck I hope all goes well !