Help with low Kh

[Phill]

When i raise mine i add 1 teaspoon added to warmish R.O water as i fine it mixes in better and drip into the tank over the course of the day...

How many litres is your tan?

[shelbygt]

350l with sump give or take 10liters

[jas]

If you want the sodium bicarbonate to slightly raise your ph at the same time as your Alk you will want to spread it out on a clean tray and bake it for 1hr at 300F. Otherwise it will most probably not affect your ph or even slightly lower it.

[Neil]

Hi guys, some experience and help needed with my chemistry please, I've kept steady params for a year now except a spike in nitrates which is now over, however with my coral stock ever increasing things are starting to change and I have also started to move to fortnightly water changes instead of weekly in a view to keeping things stable and red uce salt cost,
just done full tests my ph and Kh ar a little low, I'm due a water change this Sunday so will test again on Monday evening but want to stock up this weekend on what I need to raise it, what do you recommend? Do I just need baking soda? My full tests can be seen in signature

first thing is fortnightly water changes wont help to keep things stable your be better off keeping to weekly but changing to 5% instead of 10%

as said in Jas post bake the bicarb in the oven to change it to carbonate this will stop the addition from lowering your PH note carbonate cant be kept so will need to be mixed with RO water very soon after baking else it turns back into bicarb

to raise 350 litres by 1 dkh you need 7 grams of carbonate

if you bake 133 grams of bicarb this will give you about 100grams of carbonate mix this in 2 litres of RO water

and times the amount you need to dose by 20 to give you the ml of the mix you need
so 7x20 = 140ml

[Phill]

first thing is fortnightly water changes wont help to keep things stable your be better off keeping to weekly but changing to 5% instead of 10%

as said in Jas post bake the bicarb in the oven to change it to carbonate this will stop the addition from lowering your PH note carbonate cant be kept so will need to be mixed with RO water very soon after baking else it turns back into bicarb

to raise 350 litres by 1 dkh you need 7 grams of carbonate

if you bake 133 grams of bicarb this will give you about 100grams of carbonate mix this in 2 litres of RO water

and times the amount you need to dose by 20 to give you the ml of the mix you need
so 7x20 = 140ml

Sory Neil, only just spotted this, very usefull thanks, gonna move to 5% a week and see how that works out with my Kh