So I've had my betta for nearly 2 weeks now. He seems healthy. Swimming around a lot, I've only seem him stay at the bottom sometimes but I think he's resting? He always come up to the top when I come near the tank. But I have a few questions. I had to do a 100% water change last week because I finally bought gravel and live plants for him. I know I'm not suppose to do a 100% water change? Like do 50%. I have a 3 gal tank with no heater or filter. Plan on getting a heater soon. I might buy more live plants. How do I "trim" the plants. Specially the parts where it's just brown. Do I just cut it off? Lol. Also, since I can't do a 100% water change, is it just safe to just stick my hand in there and put in the live plants?