First off I listened to you all when I set up this tank and found AA, but it was too late. I quickly realized I made a big mistake with going with UG filter from the start
. Also, if you are reading this while gathering info on UG filters and are considering using one in a salt water aquarium, please read on, you will see what you will have to eventually do, as I have done.
Here is what I have do so far, please pray for my fish and inverts, as they are going through a lot of stress because of my bone head decision 3 months ago. I set up a 37gal in early August . After getting advice on AA I decided to start preparing a change over to Live Rock /no UG -sand bottom in mid Aug. In the beginning I put in 10 pounds of base rock, then weeks later added 17 pounds more of Live Rock , making 27 pounds so far. I let my tank adjust to that preparing for the removal of the under gravel filter. I then bought more LR
and it is curing as I type for the final chapter later. Last week I removed 1/3 of the crushed coral off the UG filter, and allowed for everything to acclimate. I still have a small bio-wheel running and no media in my HOT magnum, just water movement and surface agitation.
Today I took the plunge and pulled 1/2 the water out into a 30 gal
tub, put one of the power heads ,with a heater in there and set up a temp tank for my LR
and and crabs . I decided it would be more stress on my fish to chase and remove them than to just let them hide in a corner and remain in the tank, so they did..
I then took all UG hardware out and slid all the CC off the UG filter and piled it into the left half of the tank. I then rinsed some dry sand and added about 25 pounds to the right half of the tank.
I put a pleated cartridge into my HOT magnum and began running it to clear the water. After an hour or so I could see well enough to put the LR
back in w/o squishing someone and reinstalled a powerhead and a Koralia for water movement.
I have all 6 fish alive at the moment, only one crab is missing, didn't even see him before the start.
My plans are to monitor ammonia every day, do PWC
as needed to control ammonia and nitrite levels and hope for the best. This is where you all come in, please shoot me some encouragement and tell me I have done it the right way, or ...that all my fish are going to die and I'm gonna have to start all over,not to mention tell my 6 year old all of her pets died today- either way... the choice is yours
Next week if all goes well and no spike I will scoop out the CC and spread out the sand, and add the last 10# piece of LR
in the curing vat, or do you thing that is too soon?