Well, I want one for the 20 and one for the 55. They wouldn't be together in the 20 for long hopefully. But would it be ok to keep one in the ten gallon tub by itself then (until the 55 is up) if I don't put them both in the 20? I don't know if this seller would ship less than two. And I'd only have to pay one shipping charge.
That's fine. After the QT period, I'd move the one into the 20g and leave the other until the 55g is ready. Fish should not be moved more often than necessary.
You posted again as I was typing this post...to that question, I would wait. I would have the fish in QT a minimum of four weeks, but five or even six would be preferable. It would be good to have the new tank somewhat settled (unless you wait months it won't be "established" of course) before introducing fish, to lessen the impact of the tank change for the pleco out of QT.
I don't really have a local fish store. Just petsmart and as far as I know they don't test for that. I don't think it's too expensive for the phosphate test kit by API. I can get it online if you think I should.
I wouldn't bother myself. The fact that the algae is recent suggests it is less likely the water and more likely something in the aquarium that changed, such as light and/or fertilisers. Of course, with well water, nothing says it may not change composition, but I'm not leaning to this view.
My fertilizer is http/www.aqueonpro...-plant-food.htm . Aqueon plant food. I used two flourish root tabs for the retrospiralis. As for nitrates, the last time I tested I had 5ppm in the well water. My tanks usually sit around 20 but most of the time a bit lower than that.
OK, there's no phosphorus in the Aqueon. There is in the tabs, but this should not be a problem, as Seachem insists that the nutrients in the tabs do not enter the water column except at the roots as the plants need them [I'm currently doing some experimenting on this point, nothing conclusive yet, but it seems accurate]. Nitrate can be algae-inducing but not here, though you will likely get them a tad lower with the plants once the tanks are settled. Mine tend to run between 0 and 5 ppm except for one that is at 10 ppm but that is another story.
can I add plants during the cycling process?
Yes, but very carefully. Ammonia is toxic to all life forms, at sufficient levels. Now, some do plant tanks that are cycling, but you have to keep the ammonia low to avoid damaging the plants. And aside from this, live plants need nitrogen and most aquatic species prefer this as ammonium (ammonia) rather than nitrate, and they will take up the latter after the ammonia. This is what some term "silent cycling," because you never see ammonia or nitrite with our tests. Some will get to the nitrifying bacteria, but minimally compared to full-scale fishless cycling. Fast growing plants, particularly floating, are virtual ammonia sinks. Once the tank is planted, and the plants are showing growth, I add the first fish. When I set up a new tank using plants and wood from my other tank, which is normal now, I don't usually wait because the fish can go in within a day or two. I would take it slow though. I've never had issues.
Byron.