you're close. if it were me I would add 5 more cories and be done with it.
I want to add at least two more cories, just it is hard to find anything besides albino and emerald ones at the LFS here. I want to find two more False Julji (sp?) ones so he has some friends. And soon.you're close. if it were me I would add 5 more cories and be done with it.
Curious, the 50 is meant for tanks 20 to 50 gallons, so I figured it was the best option. Should I really look at investing in a different filter?No, but that filter is quite small for that tank IMO, which means you really have to watch the overfeeding, decaying plant matter, etc since you are at higher risk for ammonia spikes. Nothing to worried about if you're experienced at keeping fish.
I do agree that perhaps the 30 gallon could use more. But the Aqueon 10 is 100GPH. I thought the goal was around 10x the amount of water?It's actually best to filter a tank at twice its capacity, so long as your fish aren't being blown around. Thing with any filter that has a varied size range like that is it's probably only decent for a 20ish gallon tank, plus they often test those filters without filter media. In short, get another of those filters, at least, and that should work.
For the 10g, either use two of the 10g filters or use the one you have on the 30. Don't lower the setting unless fish are getting pushed around a lot. If you have one high-current spot, that's alright. It's very hard to over-filter a tank.
Test your water now and then... Get onto a water change schedule where nitrates stay at an acceptable level, and you're good so long as nothing freaks.
Acceptable levels for nitrates vary wildly on who you ask, but under 20 seems to be a good number.