You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!
If you have any problems with the registration process or your account login, please contact contact us.
General Koi Carp ChatKoi News and discussion
» Stats
Members: 25,312
Threads: 3,303
Posts: 31,110
Top Poster: markf1fan (3,497)
Hi Guy and girls
Started the RO Today and need a bit of help if possible the unit has been running for about an hour and the Ph has dropped from 8.5 to 8.1 do i need to slow down a bit? so the koi can adapt to it my TDS water was 310 going into the unit and 39 TDS going into the tank the unit is a 450 us gal and my tank is 450 gal when do you think I should mix the water?
Many Thanks
Shevy
__________________ Please click on the banner to visit the site.
yes you need to slowit down as before you know it your be getting ph way to low and a ph crash. davej or gaz will help you more on this. you will need to T off before it goes into the ro unit membraine and mix the water so you have about tds of 100 coming out. but wait till one of those two come on and help mate. mark
__________________ 1x 2400 gallon pond
1x estro sieve
1x econo bead filter
1x bakki shower with crystal bio
1x 55w pro clear uv
1x eco 12,000
1x sequence 15,000
1x hi blow 40 air pump
and some really nice koi
I doubt the pH would have shifted that quickly in such a short space of time.
More likely the pH test was a bit out. I would be surprised if it had moved that much.
Its the KH you should really be looking at, what are the comparative readings and how much water had gone in?
You dont want to move the pH too quickly, in a small tank you could mix say 75% incoming RO with 25% supply as a start, that would bring things down in a more controlled way.
I doubt the pH would have shifted that quickly in such a short space of time.
More likely the pH test was a bit out. I would be surprised if it had moved that much.
Its the KH you should really be looking at, what are the comparative readings and how much water had gone in?
You dont want to move the pH too quickly, in a small tank you could mix say 75% incoming RO with 25% supply as a start, that would bring things down in a more controlled way.
Dave
Thanks Dave the reason might be I did a water change as I changed to hikari gold to try and get the colour a bit better as there in the garage and it made the water go red so going to go back to Hikari staple but back to the RO I don't want to do it to quick I am going to try and get the ph down to about 7.5 as for the KH it might be a silly question but do you count every drop so the first drop when the water go's blue count as well if so mine is 10 drops
Shevy
__________________ Please click on the banner to visit the site.
What KH test kit are you using? Reason I ask is that Nutrafin is 10ppm per drop most others 18ppm.
When your Kh gets lower you can (if you feel the need) increase the accuracy by doubling the sample size in the tube, the Nutrafin would then be 5ppm a drop and most others 9ppm.
Count all drops, the actual will be between total drops and total drops -1.
I wouldn't worry about colour food on young koi, given decent conditions quality beni will thicken with age.
What KH test kit are you using? Reason I ask is that Nutrafin is 10ppm per drop most others 18ppm.
When your Kh gets lower you can (if you feel the need) increase the accuracy by doubling the sample size in the tube, the Nutrafin would then be 5ppm a drop and most others 9ppm.
Count all drops, the actual will be between total drops and total drops -1.
I wouldn't worry about colour food on young koi, given decent conditions quality beni will thicken with a
Dave
Hi Dave
The test kit I use is API. I have just tested and it's at 8 Drops.
Shevy
__________________ Please click on the banner to visit the site.
R.O Unit 
where's the 'top bods' when you need them!
Linear Mode
