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I'm surprised you are having high pH, because most calcium reactor tanks will suffer from low pH due to the CO2. What test kits are you using? Baking soda should not affect your pH in that manner (raising). You should not add baking soda so that the pH changes by more that 0.2. One way...

To be clear: Washing soda (sodium carbonate) has an immediate, significant, pH raising effect along with a strong alkalinity raising effect. Baking soda (sodium bicarbonate) has an immediate, slight pH lowering effect along with a moderate alkalinity raising effect. Both of these will reach an...

I like my www.geosreef.com models. mgk

There is a nudibranch called an aeolid nudibranch that eats montipora species. Several people have tried various methods of eradicating this beast. The most successful seems to be reducing the salinity and picking the aeolids off the montipora. Make sure you get the egg sacs that may be on...

Bags and heat packs are available at http://www.thebugfarm.bigstep.com/categ ... Ds=1085014 Cold packs here (I've not used cold packs before): http://www.no-odor.com/freezeze/econo_pack.htm For FedEx or UPS, try to keep the box size to 12x12x12 or less. You should be able to find someplace in...

osama: Here you go: http://www.advancedaquarist.com/issues/ ... /short.htm For the summer, it can get tricky. this is when cold packs are useful. I think during extreme temperature times, shipping should be a minimum and certain requirements such as picking up at FedEx would be mandatory...

Cool, do you have a picture? To answer your question on how much and how often, will depend on how much you will be dosing every day. Start by putting 1/2 cup of reef-grade kalkwasser in it. I like the ESV brand, it is cheap, about $18 for 4 lbs. I've used pounds of Mrs. Wages, but did not...

Was there a needle wheel on the unit? Typical set up is regulator - solenoid - needle valve. If the solenoid failed, the needle valve should keep the CO2 from gushing. Sounds like the needle valve or solenoid failed, as electronic equipment does at times, unfortunately. mgk

If you put something in the main tank, it would never grow as the tang would eat it all and not allow it to grow. The best would be to periodically take some from the refugium and place it in the main tank. mgk

The best sources of detritivore kits is going to be www.ipsf.com and www.inlandaquatics.com Since MattM and Tom at Inland Reef don't sell livestock mailorder, he's going to have quite a drive from New Jersey. The Inland Reef web site also has nothing about detritivore kits. :P I've...

That's correct, Yardright is packaged by the same company. Yardright comes in 40 lb bags. Southdown in 50 lb bags. For this year, the packaging will be called Old Castle Products. mgk

Yardright "from the carribean" is also aragonite. mgk

This past weekend, we completed the new and improved Nilsen Reactor Mark II. The features that I wanted to incorporate over the previous design was: 1) Larger volume 2) Easy Access 3) Easy drain for clean out 4) Larger pump driven 5) Easy pump clean out This lead me to the following design...

Craftics had a$50 minimum; I'm glad they are not honoring that. :) Outside of this class, you can purchase the 3/8 from www.lairdplastics.com They are pretty good to deal with around the mid-west, anyway. mgk

I just had this problem too. If you go to the www.maco.cc site it won't work. If you get to it via the www.reefs.org homepage, then it will work. mgk

I am also a ESV convert. I was using Mrs. Wages (still have some) and just did not like the residue from it. I went to ESV. 4 lb jug for around $18-19. Not too bad. mgk

It's really easy! Take the ( (Length * Width * Depth of Sand) (all in inches) / 1728) * 90 = lbs of sand This gives you the approximate pounds of sand. Sand like Southdown sand or fine carib sea sand is around 90 lbs per foot2. So for a tank that is 48" long, 20" wide and for a 6 inch...

Congrats, James and reefs.org! Thanks for providing such great information for the reef community! I hope there are many more years of issues. Now, can we get a comprehensive index? :) mgk

In my area Lowe's was around $3.50/ft while my local pool store was $1.00 for 1.5" SpaFlex. It requires a very viscous PVC solvent designed for bonding between the standard PVC fittings and the SpaFlex stuff. This solvent was as inexpensive as the regular PVC solvent. mgk

One of the most important parameters we have to ensure is correct is carbonate alkalinity. If alkalinity is maintained in a balanced state with calcium, like 3.2 meq/l alkalinity and 425 ppm calcium, then the pH will automatically fall into place. I've seen many posts where alkalinity is...