Bolus dosing

[andrewb70]

If I turn off dosing my kh drops into the 6s 24 hours later from 8s. It is a 1kh boost from Bolus

 

[twentyleagues]

If I turn off dosing my kh drops into the 6s 24 hours later from 8s. It is a 1kh boost from Bolus

I really appreciate you answering these questions in a concise manner. Its been 63 pages of "magic" and nonsense answers for the most part. Looking forward to what some time does for you!
Thank you again!

 

[Oldreefer44]

The question you seemingly responded to was about alk. Are you sure you are not referring to pH?

Yes...talking about KH. Obviously though not measuring it at 3 in the morning so could drop lower then. PH stays in the 8.1 to 8.2 range.

 

[Randy Holmes-Farley]

If I turn off dosing my kh drops into the 6s 24 hours later from 8s. It is a 1kh boost from Bolus

Thanks.

Does that mean the bolus is combined with other dosing?

 

[Randy Holmes-Farley]

Yes...talking about KH. Obviously though not measuring it at 3 in the morning so could drop lower then. PH stays in the 8.1 to 8.2 range.

OK, so help me understand what this means.


For what it's worth, my system (180 with a moderate to heavy sps bio lode) has settled in at 8.1 DKH with a 250 ml dose of their prescribed solution. Still seeing much improved coral growth and color.


Stays very consistent with it dropping to 8.0 some nights and not others and occasionally rises to 8.2 but rarely. Dose all of it at 7:30 with lights coming on at 8. Took about 2 weeks to get there after previously using AFR and Kalk.

So the alk stays at 8.0 to 8.2 dKH even 12 h after dosing? 24 h?

The bolus dose is on the order of 0.1 dKH?

 

[twentyleagues]

OK, so help me understand what this means.


For what it's worth, my system (180 with a moderate to heavy sps bio lode) has settled in at 8.1 DKH with a 250 ml dose of their prescribed solution. Still seeing much improved coral growth and color.


Stays very consistent with it dropping to 8.0 some nights and not others and occasionally rises to 8.2 but rarely. Dose all of it at 7:30 with lights coming on at 8. Took about 2 weeks to get there after previously using AFR and Kalk.

So the alk stays at 8.0 to 8.2 dKH even 12 h after dosing? 24 h?

The bolus dose is on the order of 0.1 dKH?

yup and consumption is the same .01 dkh? Hows that possible?

 

[andrewb70]

Thanks.

Does that mean the bolus is combined with other dosing?

Hi, no other dosing. The 250ml @ 8:30 sends kh from 7.8 to 8.8 and then it slowly drops back to 7.8 by the following morning just before Bolus. If say at 11am it’s 8.8 and I was to turn off dosing at 11am the following morning it would be in the 6s ie not having it’s Bolus dose at 8:30

 

[andrewb70]

Thanks.

Does that mean the bolus is combined with other dosing?

Hi, no other dosing. The 250ml @ 8:30 sends kh from 7.8 to 8.8 and then it slowly drops back to 7.8 by the following morning just before Bolus. If say at 11am it’s 8.8 and I was to turn off dosing at 11am the following morning it would be in the 6s ie not having it’s Bolus dose at 8:30

 

[andrewb70]

I really appreciate you answering these questions in a concise manner. Its been 63 pages of "magic" and nonsense answers for the most part. Looking forward to what some time does for you!
Thank you again!

No problem

 

[Randy Holmes-Farley]

Hi, no other dosing. The 250ml @ 8:30 sends kh from 7.8 to 8.8 and then it slowly drops back to 7.8 by the following morning just before Bolus. If say at 11am it’s 8.8 and I was to turn off dosing at 11am the following morning it would be in the 6s ie not having it’s Bolus dose at 8:30

I don't understand.

You dose a bolus from 7.8 to 8.8 dKH.

Then the following morning it is 7.8 dKH, ready for another bolus.

When does it drop to the 6's?

Does that mean 2 days after the bolus?

 

[andrewb70]

I don't understand.

You dose a bolus from 7.8 to 8.8 dKH.

Then the following morning it is 7.8 dKH, ready for another bolus.

When does it drop to the 6's?

Does that mean 2 days after the bolus?

Sorry I am not explaining this too well. It doesn’t drop to 6s unless I force it by stopping dosing for 24 hours.

I worked out that I need 250ml per day of Alk which when evenly dosed throughout the day keeps my Alk in the 8s.

I worked this out some time ago by stopping dosing measuring Alk and measuring Alk again 24 hours later. It had dropped from 8s to 6s so roughly 1.8-2dkh per day.

What I am seeing is a 1dkh swing now with Bolus

 

[rtparty]

Sorry I am not explaining this too well. It doesn’t drop to 6s unless I force it by stopping dosing for 24 hours.

I worked out that I need 250ml per day of Alk which when evenly dosed throughout the day keeps my Alk in the 8s.

I worked this out some time ago by stopping dosing measuring Alk and measuring Alk again 24 hours later. It had dropped from 8s to 6s so roughly 1.8-2dkh per day.

What I am seeing is a 1dkh swing now with Bolus

If you are dosing from 7.8 to 8.8dkh daily, then you are consuming 1dkh per day. Not the 1.8 - 2dkh.

If your tank WAS consuming 2dkh per day and is now only consuming 1dkh, I would likely call that a negative.

 

[andrewb70]

Ok so I dose 250ml at 8:30am when kh is around 7.8

The following morning at the same time dkh is around 7.8

Not much of a swing over 24 hours.

The Bolus dose does not appear to take by kh up to the high 9s only into the 8s. Over 24 hours it slowly comes down to round 7.8.

250ml of Alk on my tank indicates I use 1.8-2kh per day

 

[rtparty]

Ok so I dose 250ml at 8:30am when kh is around 7.8

The following morning at the same time dkh is around 7.8

Not much of a swing over 24 hours.

The Bolus dose does not appear to take by kh up to the high 9s only into the 8s. Over 24 hours it slowly comes down to round 7.8.

250ml of Alk on my tank indicates I use 1.8-2kh per day

250ml of sodium bicarbonate into a 650L (~172 gallons) raises alkalinity 1dkh. Soda ash would raise it 2dkh and have a significant pH bump at the time of dosing. We already know FM alkalinity is not soda ash.

You are using 1dkh per 24 hours.

 

[Garf]

250ml of sodium bicarbonate into a 650L (~172 gallons) raises alkalinity 1dkh. Soda ash would raise it 2dkh and have a significant pH bump at the time of dosing. We already know FM alkalinity is not soda ash.

You are using 1dkh per 24 hours.

Folks need to stop using the Fauna Marin Alk calculator and just use a normal one, lol.

 

[twentyleagues]

Folks need to stop using the Fauna Marin Alk calculator and just use a normal one, lol.

@andrewb70 I think is using fm calculator so what he is saying make sense to me. FM says 250ml is = to 1.8-2dkh in reality its only 1dkh and his tank uses 1 dkh in 24hr. If he lets it ride without dosing for another 24 hr dkh is 6, so his tank uses 1dkh and he doses 1 dkh with 250ml of fm product for his tank size.

 

[SliceGolfer]

This is what I interpret @andrewb70 to be saying:

8:30am - Dose 250ml - Alk rises from starting point of 7.8 to 8.8 and then slowly drops to 7.8 in 24 hours
8:30am following day - Alk dropped to 7.8, 250ml bolus dose adds another 1dKH and rises to 8.8, pattern repeats

IF HE MAKES NO bolus dose at 8:30am, then alk drops from 7.8 to somewhere in the 6 range

 

[twentyleagues]

This is what I interpret @andrewb70 to be saying:

8:30am - Dose 250ml - Alk rises from starting point of 7.8 to 8.8 and then slowly drops to 7.8 in 24 hours
8:30am following day - Alk dropped to 7.8, 250ml bolus dose adds another 1dKH and rises to 8.8, pattern repeats

IF HE MAKES NO bolus dose at 8:30am, then alk drops from 7.8 to somewhere in the 6 range

I think you me and @rtparty are on the same page.

 

[Randy Holmes-Farley]

Sorry I am not explaining this too well. It doesn’t drop to 6s unless I force it by stopping dosing for 24 hours.

I worked out that I need 250ml per day of Alk which when evenly dosed throughout the day keeps my Alk in the 8s.

I worked this out some time ago by stopping dosing measuring Alk and measuring Alk again 24 hours later. It had dropped from 8s to 6s so roughly 1.8-2dkh per day.

What I am seeing is a 1dkh swing now with Bolus

So are you suggesting the demand for alk over a 24 h period dropped from 1.8-2 dKH per 24 h to 1 dKH per 24 h when switching to a bolus dose once per 24 h?

 

[andrewb70]

Ok I’ll do some testing today and report back. I switched my Bolus dose off for today and I have just run a test and kh is now 7.6. It’s 08:41 in the UK