Renz

As you can imagine my goldfish will passively pick at anything I put in the tank. They used to strip the roots off of the water lettuce till I got so many of them they couldn't keep up. The pothos has been doing well in there since the start; I even trimmed the roots myself to promote new growth. I have to point out that the pothos are in some boxy black aquarium plant holders from Amazon that aren't exactly esthetically pleasing, but they protect a good portion of the root system.

Thank you everyone for all your helpful input! I'll have to give this some thought. I was thinking I might add some Rotala Narrow Leaf Sp. Red into my 75 gallon tank which currently is a sea of green plants and mosses, but I'm leaning towards sticking with the existing inert substrate and not risk it at all. Again, many thanks for your insights.

One of my tanks has been established with a sand/rock substrate but I was hoping to add some plants which require an aqua soil or equivalent. Is there a way to add aqua soil without running the risk of throwing my water parameters out of balance and/or causing any undue stress for my fish? If not I still have a bunch of epiphytes and floating plants in there. Many thanks for any guidance.

Thank you all for sharing your knowledge and excellent input! You have been very helpful and it is much appreciated.

I am setting up my first tank that will be using CO2 and was curious if it would be appropriate to use an air stone for oxygen at the same time and if so, should I run it all the time or just when the CO2 isn't running? This is my first day in this group so I apologize if this topic has already been covered. Many thanks for any guidance you can provide.