Hi guys, just placed my order with BRS, thanks again for the help. Now on this soaking rocks business would someone care to elaborate further?!
- how often to change the water?! Is it complete or partial change?
- regarding the container, I was planing to use a Brute container that later on I will use for my RO/DI water storage. Is ther a problem with that?! Would have a different suggestion?!
Thanks in advance
Marcos
Hey Marcos. The Brute is perfect for this. I purchased 60lbs of Pukani rock for an external refugium I recently built. Like other's said, it is chocked full of Phosphate so you'll need to address that during the cycle. Ideally, set up the Brute container, fill it with saltwater, add the rock, and add a powerhead and heater to get the cycle started.
From here what I did was... I dosed a couple different bacteria. You could do Microbacter7, Special Blend, or even some Zeo bacteria. But either way I found the bacteria additions to be necessary to start a positive bacteria culture - and it really helped to break down the excess nutrients. Whatever fits the budget will work. Once I was about 10-15 days into the cycle I dosed Lanthanum Chloride - SeaClear Phosphate Remover CR (purchase online). I mixed 5ml into 1 Liter of RO/DI and dosed at a rate of ~1 drip every 5-10 seconds, so a looooong drip cycle. I did this daily for a week or two. I measured PO4 every few days with my Hanna Phosphorous Checker to see the reduction in PO4. Without a doubt, the SeaClear worked to remove the insane amount of Phosphate bound in the rock.
Once the PO4 was down to a manageable level and the cycle had fully run it's course (no ammonia or nitrite) I did a 100% water change in the curing container. This eliminated the excess Nitrate that had collected in the water. I ran the rock another week or so and dosed occasionally with SeaClear if I started to see a rise of PO4. From there I transferred the rock to the refugium (or in your case display). Just make sure to not transfer any water from the curing container to the display. Just fill the display with new saltwater, heat and add flow, then add your rock.
All in all, this process took about 30-40 days but was well worth the effort. When I originally set up my display with Marco Rock, I did not take these precautions and went through a few super nasty algae cycles. To me, it's definitely worth the time and effort to cycle the dry rock correctly to avoid any headaches down the road. All of this is also documented in my Home Page Thread. HTH
