That happens with any sump. I don't own a c-250, but here is what I do with my sump
Stop the return pump and skimmer pump.
Unplug anything else connected to the sump.
Pump most of the water out of the sump.
Remove any LR and so on that you have in the sump. I don't have any because I feel it works against the system.
Muck out the sump using a large sponge. Your not trying to get it spotless, just get the worst of the glop and dirt.
Refill the sump with new SW.
Put any rocks back.
Start up the pumps.
A 4" wide x 36" long x 20" high sump is a little different than your average under stand sump...
I assume most use a gravel cleaner to just get down there and let it suck everything up?
Just a question of size. The same factors apply.
You really can't use a typical gravel cleaner on an under the tank sump, since they usually depend upon being a siphon to clean gravel. You can use a shop vac to drain a sump if your going to replace the water,
How's the skimmer working for you? In the process of starting up a c250 and curious about performance without excessive cleaning of the skimmer
Thanks! I look forward to seeing it.My experience is that it does a good job. I'll take a picture of the collection cup during my next water change and send it to you. As many have noted about this skimmer is that it is very sensitive. In other words, a small change in gate height will either stop producing bubbles or overskim. To counteract this, I added a Tunze Osmolator 3152 ATO system. The reservoir is located next to my chiller on the left side. It also has its minuses but just make sure you keep the reservoir and level sensor clean. Having a stable water level has helped my skimmer tremendously after it was dialed in on my tank. I produce a consistent amount of skimmate which stinks tremendously while somehow giving you a good feeling because you know it's working.
Back to topic. I clean my sump by removing the sponges weekly, cleaning the sides with a scrub brush and siphoning out all of the sump water with a 5/8" hose. I put the hose on the bottom of each pump chamber, including the chiller pump. There typically isn't much in there besides sand what gets swirled in the water column then deposited into the overflow and eventually in the pump chambers. I take the skimmer and pumps out twice a year and clean them. All has been great so far.
Hi,
We have an C-250. I'm cleaning the pumps every 3 months and sump. I combine with an waterchange.
I remove the 2 waterpumps and skimmer compartiment including pump.
Remove enough water that the return nozzle in the tank are just above the water level. To avoid that the sump is filling again.
Then I clean the bottom of the sump with an sifon pump:
View attachment 45784
This goes pretty good with this. And suck up a lot of stuff. Amazing how much stuff there is after 3 months in the sump.
And when clean, fresh water adding.
Hope it helps.
Thanks! I look forward to seeing it.
Cleaning the back sump area weekly sounds like a chore but it's probably the best practice. Do you also do a water change at this time?
Beautiful!!It really doesn't add much to the weekly maintenance. I don't siphon from the main tank, only from the sump area. I do a slowish water removal which gives me time to clean the 3 glass sides and the sump area while taking out 10 gallons. I then take out the sponges and skimmer cup, hose them off with a jet sprayer. I ring the sponges and shake the water off, dip them into the water change water for a minute and then put everything back in. Once everything is back, I add the new Red Sea Coral Pro mixed to achieve 1.025 SG, 10 gallons. It is about a 45 minute chore every Saturday morning. Typically done during the Southampton vs. Bournemouth game or whoever is playing that morning.
I wanted a reef tank so that's what I get! However, I get to look at this:
It really doesn't add much to the weekly maintenance. I don't siphon from the main tank, only from the sump area. I do a slowish water removal which gives me time to clean the 3 glass sides and the sump area while taking out 10 gallons. I then take out the sponges and skimmer cup, hose them off with a jet sprayer. I ring the sponges and shake the water off, dip them into the water change water for a minute and then put everything back in. Once everything is back, I add the new Red Sea Coral Pro mixed to achieve 1.025 SG, 10 gallons. It is about a 45 minute chore every Saturday morning. Typically done during the Southampton vs. Bournemouth game or whoever is playing that morning.
I wanted a reef tank so that's what I get! However, I get to look at this:
Is that the stock lighting?
Yes, the T5s. Purchased ATI last time but may go back to Red Sea.