FAQs on Calcium, Supplements
involving Calcium: Manufacturer's Products
Related Articles: Calcium, The Use of Kalkwasser
by Russell Schultz, Understanding Calcium &
Alkalinity, Live Sand,
Marine Substrates, Reef Systems,
Related FAQs: Calcium, FAQs 1, Calcium FAQs 2, Calcium FAQs 3, Calcium FAQs 4, Calcium FAQs 5, Calcium FAQs 6. & FAQs on
Calcium: Rationale/Use, Calcium
Measuring/Test Kits, Sources of
Calcium, Calcium Supplements,
Dosing, Chemical/Physical Interactions, Troubleshooting/Fixing, & Calcium Reactors,
& FAQs on Calcium Reactors: Rationale/Use, Selection, Installation, Operation, Media, Measuring, Trouble-Shooting, By Makes/Models, &
Calcium and Alkalinity, Kalkwasser & FAQs on: The Science of Calcium & Alkalinity,
Importance, Measure, Sources, Use of
Additives, Troubleshooting/Fixing, Products,
Feel like a beginner! SeaChem Ca
Hello "most knowledgeable ones in the entire world
about reefs" people!
<Wow! Hello Pam>
At present, my tank is 2 months old and I find I'm struggling
with many of the same issues that plagued me 10 years ago.
I guess the knowledge I attained then, has seeped from my brain
and I find myself learning all over again.
<The technology has changed tremendously as well.>
I found an old document I used 10 years ago and was wondering if
it still stands true.
As I stated in one letter, I took about 6 years off from the
hobby and now I feel like a beginner!
<Mmm, the chart does not state which size tank this dosage is
for. The calcium does not have to be put into a pail and
mixed. I mix the required calcium dose with tank water in a
small plastic wide mouth bottle and slowly add to the
system. Same goes for Reef Builder.>
<You're welcome. James (Salty Dog)>
For the health of your corals and over all
Use 2 tablespoons EACH of
Reef Complete these products, 2 times a
Reef Calcium Dump directly into
TOP OFF WATER
Reef Advantage Calcium
Fill a 5 gallon pail with plain
water no salt!
Week 1 >> put
1 T. Reef Advantage Calcium in pail. Use this water
to top off for the first week.
Week 2 >> put
1 T. Reef Builder into ANOTHER bucket and use this for top
off for the second week.
Practice this procedure forever
Water changes should be done
at the rate of about 10% a month. Only at this time do you add
salt to the tank.
Calcium Chloride/Calcium And Alkalinity
I'm just learning of the problems that can arise from supplementing
a reef tank continuously with Calcium Chloride....in this case
Seachem's Reef Advantage Calcium.
<This product is best used short term to rapidly increase calcium
This product has worked incredibly in my smaller systems, yet now that
I am 6 months into a 150 gallon sps reef, I'm noticing a few things
that are entirely irregular. Firstly, my salinity has crept up to
1.028. I've always been diligent about 1.025 specific gravity water
changes and freshwater top off, yet I'm not understanding fully how
calcium chloride plays a role in this spike.
<Calcium will not raise specific gravity.>
Secondly, without supplementing calcium for over 3 weeks, my levels
have stayed at 480 and not come down to my desired 420 level.
<Magnesium must be at the proper level (1280-1300ppm) to allow the
calcium to be utilized by calcium loving inverts. Magnesium is a major
element of sea water.>
All the while, alkalinity is depleting almost as fast as I can correct
it; from 9dkh to 6 the next evening.
<High calcium levels can cause this drop.>
I recently purchased a calcium reactor and am ready to install it, but
I'm afraid of what may happen if these levels don't stabilize.
I've corrected specific gravity over a 6 day period and brought it
down to 1.025, but want to be assured that I'm doing the right
thing in setting up the reactor. Should I wait a while and keep dosing
Seachem's reef builder alkalinity powder or set up the reactor and
start dripping slowly.
<I would concentrate on getting the magnesium level up where it
Your corals will be able to absorb more calcium when the magnesium
level is maintained. Is exactly why magnesium is always a part of
calcium based treatments for osteoporosis, it increases bone
I would never ask my LFS for help (unfortunately they're in the
business of selling livestock, not saving it), and too many conflicting
opinions would be bouncing off me from fellow reefers. Please
<You might want to take a look here.
<You're welcome. James (Salty Dog)>