Turnover Question

[coldcazzie]

As in the title really. When working out your turnover do you use your water valume or your tank volume?

As tank is a Rio 240, the tank valume is about 260L, but actual water volume once substrate and wood are taken into account is only about 195L, plus the 12L in the external.

External claims 2000l/h so estimate just under 1000l/h as it's full to bursting with media. If I added 2 3000l/h wavemakers would that be complete overkill?!

Just I've found 2 for £15 on eBay and it's a good deal - best I've found yet, but would it be too much for the tank (and specifically the sand substrate) to handle?

I do find it annoying that the smallest ones you can get are 2000l/h unless you buy a Koralia, which are extortionately priced! I could really do with 2 Nano 900s but I think it'd be ludicrous to spend £40 plus P+P on them! How come no other companies have made dinky ones?!

 

[Verminator89]

Simplify it for yourself and just go with tank volume. It doesnt have to be exact, just there abouts. For planted tanks the ideal turnover for your filtration is x10 to help get circulation round the tank properly to distribute nutrients/CO2.

 

[ian]

yep agree with James, don't overcomplicate it. We wouldn't take away the amount of water displaced, we would just use the volume of the tank. Same with the filter/pump, just go with the LPH.

ps, thats a great price for the wavemakers!! Just use one if you find it's overkill, you'll end up with approx 19x turnover?? Thats with one!

 

[coldcazzie]

ps, thats a great price for the wavemakers!! Just use one if you find it's overkill, you'll end up with approx 19x turnover?? Thats with one!

I know!! mental!

It's more to do with the fact that there's more than one deadspot, and I'd like to have more than one wavemaker pointed in different directions. Shame they can't be adjusted...

I spose I could try both at the same time to try to get over the cyano and then take one out when (if! ) I ever get rid of it.

 

[coldcazzie]

What about Resun wavemakers, are they any good?

 

[SuperColey1]

No idea on the wavemaker.

Like above ALWAYS go by the tank volume. It is nigh on impossible to work out water volume:

How much water is IN your substrate?
How much is in the plants?
How much is in your filter and its hoses?
How much is in the 'soaked' wood?

To work out water volume is very very difficult.

Most of the 'gauges' take into account that there will be some difference with displacement and when you add in the water inthe hoses, substrate, cannister there may not be much difference at all.

AC

 

[JenCliBee]

As in the title really. When working out your turnover do you use your water valume or your tank volume?

As tank is a Rio 240, the tank valume is about 260L, but actual water volume once substrate and wood are taken into account is only about 195L, plus the 12L in the external.

External claims 2000l/h so estimate just under 1000l/h as it's full to bursting with media. If I added 2 3000l/h wavemakers would that be complete overkill?!

Just I've found 2 for £15 on eBay and it's a good deal - best I've found yet, but would it be too much for the tank (and specifically the sand substrate) to handle?

I do find it annoying that the smallest ones you can get are 2000l/h unless you buy a Koralia, which are extortionately priced! I could really do with 2 Nano 900s but I think it'd be ludicrous to spend £40 plus P+P on them! How come no other companies have made dinky ones?!

Other companies have made much much smaller ones.... the ones you've linked to will be re-sun's, they are also huge and the actual output is more like 1500-2000lph and nowhere near 3000lph

These HERE!!! Are also re-sun, but far smaller, better built and run at around 1500lph, a little more expensive but well worth it for quality, look and actual closeness to the actual flow rate.

I agree with everybody else, volume should be worked out at general full body of water.... so rio 240 would be worked out at 240 litres .

 

[coldcazzie]

No idea on the wavemaker.

Like above ALWAYS go by the tank volume. It is nigh on impossible to work out water volume:

How much water is IN your substrate?
How much is in the plants?
How much is in your filter and its hoses?
How much is in the 'soaked' wood?

To work out water volume is very very difficult.

Most of the 'gauges' take into account that there will be some difference with displacement and when you add in the water inthe hoses, substrate, cannister there may not be much difference at all.

AC

Ok, point taken

Other companies have made much much smaller ones.... the ones you've linked to will be re-sun's, they are also huge and the actual output is more like 1500-2000lph and nowhere near 3000lph

These HERE!!! Are also re-sun, but far smaller, better built and run at around 1500lph, a little more expensive but well worth it for quality, look and actual closeness to the actual flow rate.

I agree with everybody else, volume should be worked out at general full body of water.... so rio 240 would be worked out at 240 litres .

Sorry, yeah, those were the ones I meant when I said resun wavemakers. Will go for those - have found 2 for sale in UK which will be much quicker than Hong Kong! Definitely don't need the giant 15000l/h ones meant for marine tanks!