No check valve needed for reef tanks. The sump should be able to accommodate any drainage of water from the display tank when the return pump is powered off.
Apparently the cartridge can process 75,000 gallons of water so it will last a very long time! Replacement filters can be purchased from online water filtration sites for $256 or so. This is the search term you can use in Google: Pentek CRFC20-BB cartridge
Have your considered using a chloramine monster in your setup?
https://www.bulkreefsupply.com/brs-reverse-osmosis-chloramines-monster.html?queryID=3e46c2e3af2c88fb91f9bb23dc4b27d9&objectID=850&indexName=brs_prod_m2_default_products
Good idea! I just replaced my carbon filters this past weekend (and ordered a new set from BRS) but will use this 13.5lb pile of carbon I am about to have!
Did you notice any difference when you switched to CAC?
I bought the 0.5 cubic feet which will take me years to go through. Maybe I will break it down into smaller chunks and see if any club members want to buy a small amount to test out.
For those who aren’t aware of the CAC carbon from
ClearwaterSolutions, here is an explanation on why many hardcore SPS folks (specifically, the Moonshiner community) have stopped using ROX carbon and switched to CAC...
If anyone is interested in splitting a CAC order let me know. I want to switch to CAC but don’t use carbon often. Therefore, 13.5 pounds would take me years to go through
I believe the science of skimmers has been around a long time so what about Tunze’s skimmer allows it to skim phosphates better than other skimmers. I have not been in the hobby long but it looks like the tech upgrades to skimmers in the last few years have all been pretty basic: DC motor, more...
If you want a temporary home for some fish I have a 10g quarantine tank that is running empty. It is currently filled with therapeutic levels of copper but I can switch to unmedicated.
Here in the Bay Area, only one LFS has rigorously quarantined fish: HighTide Aquatics. Does that mean all the other LFS are not taking enough precautions to sell disease and parasite free fish to consumers? I accept this as economic reality since most reefers don’t care about quarantine...
Maybe I am a dummy but I don’t see how pick-up directly from the LFS and putting into a home tank directly is worse for livestock than going into the LFS tank then to the home tank a few weeks later.
I have ordered from Bioto several times. They ship directly to my home. If I wanted to save...
I have found dosing ammonia as an affective way to keep my nitrates from bottoming out.
Here are my notes, mostly based on posts from Randy Holmes-Farley on Reef2Reef:
Dosing Ammonia
More bio available than nitrate
20 grams of ammonium bicarbonate (about 4 and 3/4 teaspoons) in 1 L RO/DI...