RTR wrote:Planting for Cichlid and catfish tanks tends to trickier than for puffer tanks IME.
In my house it's the other way around. I use the same plants, the same substrate and the same lighting. The only differences is the PH (lower in my cory and catfish tanks), that the water is stored before pouring it into the tank in my cory and catfish tanks, whether the tank has a cover (most of my cory tanks have no cover, but that's not all of them), and what I think is the main difference: what food I use in the tanks. My puffers get frozen shrimps and other stuff like that. My cories and catfishes get more "dry" food, like different kinds of tablets, discus granules and bloodworms. I don't think the bloodworms affect the plant growth, but I suspect that the dry food maybe do. Dry food tend to leave a lot of dust on the bottom, and it's also easier to overfeed when you use it (and I suspect I overfeed some - especially the cories, as I want them to have lots of eggs). My puffers, on the other hand, get food measured up to exactly what they need, as I only have one puffer in each tank. Well, that's what I have been thinking about myself.
Here's the answers to the other questions:
Iliveinazoo wrote:Could the puffers themselves be attacking the plants or roots?
No, they don't.
If you don't think that the puffers are damaging the plants then how powerful are your lights (WP(US)G)?
I can't give you the exact numbers, but it's no difference in what light I use in puffer tanks and the other tanks, except differences because of the size of the tank. Besides I use fluorecent tubes that are not very well marked with information.
What substrate are you using?
Sand in all but two tanks; one of those two has catfishes, the other has a puffer). All other have sand, both in puffer tanks and cory tanks. Except of course my BW tanks. But I don't have plants in those.
What fertilisers are you using and how much are you dosing?
I am really bad at remembering using fertilizers - both in puffer and cory/catfish tanks. No difference there. I have tried to remember to use fertilizers in puffer tanks lately, but it's so few times that I can't see any difference.
Do you add extra CO2?
No.
What plants are you attempting to grow?
My favorite plant is Hydrocotyle leucocephala. It's a very easy plant to grow, and it grows quickly...but not in my puffer tanks. I really, really don't understand why. It grows so quickly in my cory tanks, and you can use it both floating and as a plant growing a little on the bottom (it doesn't stay there though). I also use Echinodorus bleheri in some tanks, and some kind of vallisneria in some. But in my puffer tanks, they all die off, or only partly survive. Those are the three most used plants in my tanks. I have a few other I don't know the names of.
Do you keep the tanks differently? i.e are the puffer tanks so well looked after that there isn't a trace of NPK or trace elements around for them to feed on?
I have the same frequency on water changes in all my tanks (with a few exceptions). As I said earlier in this message, the cories get lower PH and has the water stored before pumping it into the tanks. That's the only differences when it comes to the water. One other difference is that none of my puffers have external filters, only internal ones. Not all my cory tanks have external filters either, but the majority have. I do have one cory tank where I can't make the plants survive though, but there's something very odd with that tank. I think the problem there can be the low PH.
When I think of it, my cory and catfish tanks probably are the exception here, as I didn't succeed with plants before I started keeping those fishes. I have more cory tanks than puffer tanks now though.