Backyard Aquaponics
A place to discuss aquaponics

any suggest about this hydrated lime i realy need to up my ph and my pepper plants in the system need calcium

is this safe for my fish

Looks to be a mix of slaked lime, hydrated lime... supplemented with some slaked magnesium and extra calcium.... or possibly just a mix of dolomite...

Yep... It will certainly buffer both your pH and hardness.... and provide Calcium & Magnesium for your plants...

It would appear to be fish safe... but it's potentially a fairly strong pH buffer... use sparingly, and retest your pH... before adding more to acheive your desired pH...

thank you i will try

You might be better going for some shellgrit for long term buffering. How low is your PH?

6.5

And how big is your tank?

blue barrel i think 55 gal

Then, if you need to use it... I'd suggest a "pich" at a time... 6.5 is actually probably a perfect pH...

in what range is it danger for fish and bacteria ??

I see on your system thread your trying to tackle leaf curl on your peppers. I dont think its a calcium deficiency... possibly magnesium but its more likely to be caused by infection from something like whitefly ro thrips etc.

must be Magnesium because i dont have whitefly or i dont see them the plants leaves is clean only 1 plant i had whitefly but i spray it with baking soda and in 2 days i didnt see them no more for 3 weeks already got some marigolds close to the system in soil

Calcium deficiency in Peppers/Capsicums will cause distortion/deformation of the leaves, especially in the new growth... and of course blossom end rot in the fruit.

Magnesium Deficiency will tend to show as yellow patches between the veins which then turn brown.

whats with that 130%....

Are you referring to the amount of hydrated lime??
You don't want to move the pH more than 0.2-0.4 points at any one time... because of the possible negative effects on your fish...

In such a small amount of water.... you might be surprised how much a "pinch" will move your pH...

...and wait an hour or so after adding the pinch before re-testing the pH.