wave maker causing my tank to sway

[homegrowncichlid]

just received a Jebao rw8 (up to 2000 gal/hr) and set it up to make a standing wave in the tank, by adjusting the on/off period I can create a 2 inch wave in my 65gal standard glass tank.
However, its on a open iron frame and I noticed some movement, so I placed a glass of water on the hood and a ruler up there also, with the ruler touching the wall.
As suspected, the tank was swaying 1mm to and form the wall, with the wave, so I changed the period, pushing the frequency out of sync, thus stopping the nice wave action.


SO I know iron is strong and my open strand flexes. If I were to lean on the tank, it will move, because it doesn't have any cross braces.


Should this tiny motion be a warning to me or is it within normal limits?

 

[duke62]

Sounds like a issue. When I set my tank up (180) I noticed when I filled it for a test run when I walked the tank bounced around so I bolted the frame of the tank with lag bolts from my 2x6 frame of the stand to the studs in my wall. I used 4 lag bolts and had to put some wood in between the stand and wall to creat a solid area so when I tightened the bolts it didn't get pushed up on a angle. Worked out perfect. Maybe you can do something similar

 

[duke62]

Quick pic

 

[homegrowncichlid]

ah, a carpenter's solution and a good one. Reinforce the base like you would a bookshelf or dresser. Unfortunately for me, the iron stand only has two thin 1 inch legs facing the wall, the position is fixed, since everything is up and running and my walls are cinderblock. Maybe a tough challenge for me.


I'm more interested in the strength and flexibility of iron.

 

[duke62]

Drill 3 holes in the iron stand and drill holes in the cinder block wall directly across and use butterfly wall hanger into the cinder block and a nut and washer through the stand

 

[salpet]

get a new stand before you need a new floor and tank

 

[edd]

get a new stand before you need a new floor and tank

+1 or fix it. if you need to screw your stand to the wall, something is not right.
fix it the right way, what ever that might be.

 

[Shastri Sookraj]

Bolt that stand down to become one with the floor or wall or get a stand with more surface area on the bottom so you won't end up with a pendulum effect

 

[homegrowncichlid]

There's no danger of the stand collapsing, its just the basic open frame iron stand sold everywhere. I'm just checking on the strength, but I'm guessing it wasn't designed to sway. If I were to weld 45 degree triangles onto the legs and platform, that would give it plenty of strength, but alas its one of the cheapest stands out there. Next time I'll get something sturdier. Till then I wont be able to get the full potential out of my wave maker.

 

[edd]

you can drill the stand and bolt a cross brace to the back. and you can do it while its set up.
is the stand on a rug?

 

[homegrowncichlid]

Thanks for all the engineering advice, but that's all beyond what I'm capable of. I'm going to have to surrender to the realities of my situation. Not wave compatible.
My next tank on the other hand is going to have refugium, algae scrubber, frag area/ denitrifier/ GFO/bio pellets/ skimmer/ blah blah and be WAVE maker compatible.