Hydor Koralia 850

chrisely24

chrisely24

Member
I took apart my Koralia 850 today today to clean it and there is a part i am unsure where it belongs and in which direction it may go.

It is part # xp1959 in the instruction manual. Here is a link to the PDF manual.

http://www.f3images.com/IMD/UserManuals/HD00717.pdf

I am hoping someone out there has this PH and knows where it goes. if not, I will just use trial and error.
I think it may go in the hole before the impeller shaft goes in but no idea. I didn't see it come out of the PH, it was laying in the sink beside my cleaning bowl.
 
chrisely24

chrisely24

Member
" A picture is worth a thousand words"
I didn't have anywhere close to a thousand words in my post so I didn't want to waste a picture LOL.
 
snakeblitz33

snakeblitz33

Well-Known Member
The powerhead on the left may be better off if you go from top down than from bottom up... getting flow to the sandbed and oxygenated water from the top of the tank will be better for the overall health of the tank.
 
chrisely24

chrisely24

Member
Cool, I will move it tomorrow. I have a second PH on the right side as well now. I will move both of them. Would it be wise to have one up and one down to keep a ripple at the surface?

I also leave the first section of my glass tops open now. Don't want to remove them all the way cause the humidity here in Ga is sucking up the water faster than i can make it lol.
 
snakeblitz33

snakeblitz33

Well-Known Member
I suggest removing the glass tops all together. I know it's a lot of evaporation, but here is why: oxygen needs to get to your tanks inhabitants. In winter, a home is usually sealed up nice and tight because you don't want the heat to escape but you also want to live in your home, so your respiring.... meaning giving off carbon dioxide. The air inside your house is naturally much lower in oxygen then outside your house. Furthermore, your fish and corals have to breathe oxygen and respire carbon dioxide, which in a saltwater tank is turned quickly into carbonic acid. This acid will lower the pH of the water... usually to around 7.6 to 7.8pH. The pH is in "log base ten" so it's actually a significant amount lower than what a reef tank needs to be at around 8.2 to 8.3 consistently. Leaving your tops open will help the tank breathe, will help increase pH (to about 8.2) and therefore allow the organisms within the tank to be healthier by having a more stable pH.

I know it sucks, but letting the tank breathe is what is best for the tanks inhabitants. Do you have a sump? you can invest in an auto top off system which will automatically top off your aquarium when the water gets low. Maintenance on it is very little and depending on your setup you may only need to fill it up once a week. Look into it if topping off every day is an issue.

I also suggest looking into an RO/DI unit so that you can have pure water on hand at all times for top off and to mix new saltwater up for water changes. Using tap water in this hobby is a no-no for the most part unless your county has extremely good water quality.
 
chrisely24

chrisely24

Member
Thanks Snake, good info. I will remove the hoods altogether.
I have been looking at the gravity fed ato with a shutoff valve in the sump.
I have a Spectrapure 3 stage mounted under the kitchen sink with a digital tds meter on it..
 
pegasus

pegasus

Well-Known Member
You should, at minimum, add a DI cartridge to the Spectrapure. This final stage polishes the water to complete purity. Anything above 0ppm TDS is not good for your tank. If you haven't already, check with your local water association to see what chemicals they use to treat the water. If they use Chloramine (Chlorine + Ammonia), you'll need a carbon block specifically for Chloramine. If it's just Chlorine, Fluoride, etc., a standard carbon block is fine.
 
chrisely24

chrisely24

Member
The Spectrapure 90 I have has a DI cartrige. I will check my water company though and see what it uses.

I have a tds meter and my water is around 130 or so and zero after the ro/DI.
 
pegasus

pegasus

Well-Known Member
chrisely24 said:
The Spectrapure 90 I have has a DI cartrige. I will check my water company though and see what it uses.

I have a tds meter and my water is around 130 or so and zero after the ro/DI.
Click to expand...
Cool. I was confused because you originally said it was a Spectrapure 3 stage, which wouldn't have DI. The Spectapure 90 is a 4 stage...
 
chrisely24

chrisely24

Member
I put it on the end of the magnet before I stuck it back into the chamber and it is working fine. I believe I had the cupped side of it facing the magnet.
 
E

Eric8585

New Member
chrisely24 said:
I took apart my Koralia 850 today today to clean it and there is a part i am unsure where it belongs and in which direction it may go.

It is part # xp1959 in the instruction manual. Here is a link to the PDF manual.

http://www.f3images.com/IMD/UserManuals/HD00717.pdf

I am hoping someone out there has this PH and knows where it goes. if not, I will just use trial and error.
I think it may go in the hole before the impeller shaft goes in but no idea. I didn't see it come out of the PH, it was laying in the sink beside my cleaning bowl.
Click to expand...
Where does that part go and in which direction? Thanks
 
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