Stingray's tank

That's is plenty of space for three they will like it allot. Think about a pump that is rated at about 5000gph at 0 head.

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I would go with two pumps if you are doing a sump one pumping to each end of the tank the longest head height should be rated a bit more than the shorter head height

I like to pump about 10 the tank volume per hour that way you won't need power heads to move flat spots


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You will get into an age old debate there. Most people say x10 per hour turn over and others say half that as it allows more contact time for the water to go through the sump media. It is true that x10 will probably mean no dead spots but it will also call for drain lines and sump that can handle the turn over. I turn a 600 UK gallon volume about 4 to 5 times an hour and take care of any potential dead spots with 2 big power heads that are extremely cheap on electricity compared to the cost of running 2 big electric gusling return pumps.

Zooaqua said:

I see! Thank's for helping!
Pumping 10 x the tank volume is important to make water move, or to make a good biologic filtration? It makes me think that, running that flow rate to a filter would be to much , am I wrong?

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I run 10x through my tank and mechanical filtration but have a secondary pump running my biofilter separately at a much lower gph

jim barry said:

You will get into an age old debate there. Most people say x10 per hour turn over and others say half that as it allows more contact time for the water to go through the sump media. It is true that x10 will probably mean no dead spots but it will also call for drain lines and sump that can handle the turn over. I turn a 600 UK gallon volume about 4 to 5 times an hour and take care of any potential dead spots with 2 big power heads that are extremely cheap on electricity compared to the cost of running 2 big electric gusling return pumps.

Click to expand...

I uped my flow rate over time as the rays grew

I started at 20,000 lph without head so probably only about 12,000
I'm now up to 66,000 lph without head

1 x 30,000 lph pump running the furthest 2 returns

2 x 18,000 lph pumps one of which runs my uvs which slows it down a fair bit

I have no lumps of ray poop left on the floor

But pumps kill electric

30,000 650w
18,000 280w

We all like to run our tanks our own way what works for one person may not work for another

Just make return and drain pipes bigger than you think needed it will then give you options


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3 best for fully grown adults but most will go with 5 or more


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