DIY battery gravel vac, or hacking a ready made one - DIY Aquarium Projects - Aquatic Plant Central

Go Back   Aquatic Plant Central > General Interest Forums > DIY Aquarium Projects

DIY Aquarium Projects For those that are handy or looking to save some money, discuss your DIY aquarium projects here.

Reply
 
LinkBack Thread Tools Display Modes
Old 09-04-2017, 06:32 AM   #1 (permalink)
Member
 
Join Date: Jul 2009
Posts: 56
iTrader Ratings: 0
captmicha is a regular member
Default DIY battery gravel vac, or hacking a ready made one

I want to be able to touch up my tanks in between water changes, especially with sponge filters not grabbing up the mulm, without having to grab hoses and buckets. But I have an Eheim battery vac and the suction sucks (see what I did there?), and it's always breaking down. None of the others on the market are supposed to be as "good" as the Eheim either.

I tried making one with an electric water pump, but the 1/2" return hose required knock things around my tank, and it's a pain to have to keep plugging and unplugging it when I go from tank to tank. Hence why I still want a battery powered one.

Has anyone done a DIY battery powered pump, or seen a tutorial for one? Or hacked one of the ready made ones to take more powerful batteries?
captmicha is offline   Reply With Quote

Advertisement [Remove Advertisement]
Old 09-14-2017, 09:28 AM   #2 (permalink)
Member
 
Join Date: Aug 2017
Posts: 56
iTrader Ratings: 0
Gone missing is a regular member
Default Re: DIY battery gravel vac, or hacking a ready made one

Sorry that I have not seen this post earlier. DIY, hacking, changing is a favorite game and I might have some ideas. Still interested?
Some things that might change the operation?

Needs to be more "powerfull" to pick heavier debris? Perhaps using a smaller intake? The smaller diameter makes for faster flow even though the amount is the same. Faster flow can appear to be more powerful as it may pick up stuff better.

Stronger batteries? That can mean two things. Are you hoping for longer lasting batteries. That could be solved with larger capacity batteries still using the same voltage. But if spinning the motor faster is wanted, that can be pressed some but not too far to burn the motor.

Interesting idea and I'm open for "brainstorms" if this is still an idea for you.
Gone missing is offline   Reply With Quote
Old 09-14-2017, 01:04 PM   #3 (permalink)
Member
 
Join Date: Jul 2009
Posts: 56
iTrader Ratings: 0
captmicha is a regular member
Default DIY battery gravel vac, or hacking a ready made one

Yes, still very interested. A smaller intake is a good idea, also speed for more thrust. Any ideas?

The electric plug in one I tried making was just a cumbersome waste of time.
captmicha is offline   Reply With Quote
 
Old 09-15-2017, 12:40 PM   #4 (permalink)
Member
 
Join Date: Aug 2017
Posts: 56
iTrader Ratings: 0
Gone missing is a regular member
Default Re: DIY battery gravel vac, or hacking a ready made one

A couple random thoughts, then!
One is that a smaller tube will be passing near the same amount of water so it will be a faster flow and appear stronger. Some paying with different sizes might find one you like. This idea is why they build the big tube on the end of the commercial siphons. It lifts the sand but then drops it before it gets caught in the smaller tubing and removed completely.
For a longer lasting battery one might play with adding more batteries connected in parallel so that the voltage remains the same but the total capacity is doubled. Depending on what is wanted, it might be good to find some of the higher capacity dry change batteries of the same voltage as the siphon. Things like those used for emergency lighting or alarms systems, Motorcycle or RC cars might be prospects for higher capacity.
For higher voltage to make the motor spin faster, we begin to get over into burning the motor if we push it too far but most take tank a bit more than rated. Cars are rated at 12VDC but often see 14 volts for long periods when running. Danger here is you begin to run a 12V motor on 20 volts, though!!!
Got any thoughts on what type and voltage the tiny motor currently runs on? Two "D" cells put end to end to give about 3 volts, maybe?
Gone missing is offline   Reply With Quote
Old 09-24-2017, 05:19 PM   #5 (permalink)
Member
 
Join Date: Aug 2017
Posts: 56
iTrader Ratings: 0
Gone missing is a regular member
Default Re: DIY battery gravel vac, or hacking a ready made one

Any more thoughts or progress on this project?
Gone missing is offline   Reply With Quote
Reply


Aquatic Plant Central > General Interest Forums > DIY Aquarium Projects > DIY battery gravel vac, or hacking a ready made one

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -8. The time now is 08:21 AM.

Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2021, vBulletin Solutions, Inc.

Search Engine Friendly URLs by vBSEO 3.6.1