Please come and explain using small words...

[LadyNymeriaGhost]

Hi.
Am new to this. We got a 63l tank last weekend, and stocked with 6 male guppies on Wednesday.
I've just tested the water, and there's no ammonia or nitrite, but the nitrates are a little on the high side. Like, in the orange section of the chart, not the WATER CHANGE red bit.
So, do I wait and see, and allow the system to set itself up, or should I be doing a partial water change, to head off the problem?
Sorry if I'm asking a daft question.

Bumping. Anyone, please?

I'm not a expert by any means as I'm just cycling my new tank. But it's the ammonia you need to keep a eye on as that's what can poison your fish. I believe the safe levels of nitrates are below 40PPM so if it's below that shouldn't be a issue.

I have attached screen shots off of the info I have been going off of, it is for goldfish but I'm sure it's the same for all fish.

Info

Oooh. That's really helpful, thanks. I'll just keep an eye on it, then. The fishes seem happy, anyway.

It doesn't hurt to get in the habit of a small partial water change regularly for oxygen levels. It's supposedly (can't see how they tested it!) like opening a window in a smoky room!

Ok, thanks. I'll do a small one tonight.

If you have no ammonia or nitrites but there are nitrates, this suggests that you're tank is cycled. That's impossible in only a week, unless you started with a seeded filter already?

Either way, in such a small tank it's good to get into the habit of doing lots of small water changes to keep the water quality stable. I used to have a similar sized tank and I'd change 4 litres daily. It's much better for the fish.

Do be sure to dechlorinate the water you put back in.

Have you tested your tap water for nitrates?