Reply With QuoteI use gravity to do the work for me
Use a long tube fill with water, one end to my tank, one end to my bucket.
That is all.
i try the hand pump type and the one which you pump up/down vigorously type but they don't seem to work very well , end up i use my filters output to drain the water ...
is there any electrical pumps i can use to make it easier to pump water out of and into my tank ?
Last edited by benny; 2nd Feb 2008 at 14:45. Reason: SPELLING
I use gravity to do the work for me
Use a long tube fill with water, one end to my tank, one end to my bucket.
That is all.
Last edited by benny; 2nd Feb 2008 at 14:45.
I was scouting for one too recently because the cheapo type hand pump is too slow ( flow rate is like trickling). I saw a battery powered type at Wu Hu Tiong Bahru but was skeptical that it is powerful enough. I end up with the larger hand pump type. Have not used it yet. I have heard something called python vacuum suction thingy nut have not seen it before and no idea who is manufactuer.
WaterH2O
<Fish are Friends, not food>
I used the hand pump you typically find at LFS. It has been effective for me. If yours is not working well, it's either the pump has a crack or the height of the outlet is too close to the height of the inlet.
Try this:
1. Get a small cup and fill it with the tank water and place it inside the pail
(please note that the pail should idealy be lower than the fish tank)
2. Place the hand pump outlet inside the water of the cup
3. Place the inlet into the tank and pump the hand pump
4. The water should start to flow easily
I currently use a gravity siphon and a long hose to siphon water to my backyard. Once i get around to buying a 1" ID hose, i'll be using my Fluval FX5 to suck out water to the backyard, as it has the tank draining function with minimal hassle.
in future when i set up my new 4x2x2 tank at my new place, i intend to buy an external powerhead and use that to suck water out to the toilet.
using the filter/external pump to suck out water saves loads of time if you get a high rated pump since (i find) the natural siphon method really slow...takes me up to 30min to drain 50% of my 4x2x2 tank, while it takes less than 5min with a pump rated 2300li/hour
the gravity method is really hard to use
What i do is to connect the long hose to a tap in my backyard, put the other end of the hose into the tank and switch the water on. once the hose starts pouring water into my tank, i switch the water off and disconnect the hose from the tap. The water will automatically start siphoning out.
of course, the downside to this is that chlorinated water is introduced into the tank. however, as my tank has a volume of 420 litres, i figure a few hundred ml of chlorinated water is negligible, and i will be sucking out 1/2 the water + pouring in dechlorinator in about 30minutes anyway.
Very interesting way of WC.
I believe the rate is depending on how high you live. If you live at HDB, the gravity pull will be greater as you live higher thus faster?Originally Posted by illumnae
Any physic student can correct me on this?
IMHO, I have always thought it is the gravity different between the water inlet and outlet that determine the rate of flow. In high rise flat, unless your pipe goes down to the ground floor or lower floor, else it should not make a different..I believe the rate is depending on how high you live. If you live at HDB, the gravity pull will be greater as you live higher thus faster?
Any physic student can correct me on this?
From physic point of view, the difference in height between the tank and the basin or container is critical to the water flow. It just follows the bernoulli equation.
Which is why using the hose method kinda sucks for lower tanks especially if you live in HDBs. Draining water to the kitchen toilet just takes forever! Not to mention the siphon gets weaker and weaker untill it finally stops and i'll have to do manual hand pump siphoning when it reaches about 10% for my 3Footers.
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