how to get flow in and out of the rocks?

[mopar9012]

I have a 29 with a good amount of rock. Its been a long time since i read up on diatoms but I believe they can come with lack of flow. And the only places I have diatoms is behind the rocks. I see most people with their PHs up top. Do I just need to get some more power heads?
And what are some tips on keeping your sand nice and white? And how do you clean it?

 

[1990jpyj]

power heads will fit that problem. i have 2 on the back side of my tank blowing right into my rock. well sort of blowing on. it goes right into a passage way on both ends. the clowns love to go in there and flw on the current. its funny to watch. probly for a 29g i would say 1 should do ya just fine

 

[mopar9012]

Ill see if I can get a small power head at the flowing behind the rocks. And maybe 2 koralia 2s....
I have 2 maxi jet 1200s just sitting around from a previous tank but just one of those in the 29 and the sand goes everywhere.

 

[1990jpyj]

yea i would say try a small one. if its blowing the sand around try and face it a little upwards to see if that stops it. good luck with it. i have had similar issues with setting a PH.

 

[mopar9012]

Yeah i have one koralia, I like those because they look good and they have a very sturdy mounting system. I have a cheap one that will just slowly move to where its pointing in the sand.

 

[wade163]

speaking of such...I have a question as well...this may or may not be the right time for this....but if I have a 75 gallon tank, what is the max power head that I can put in my tank...

 

[mopar9012]

i think you want to turn the tank over about 30ish times. 20-30 I think, somewhere in that ballpark.
So that being said 2 maxi jets 1200 would be 2400GPH which is 32 times.
I would do just 2 mxi jets, bc then you would probably have low flow sections, like I do in my rock.