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Hi can you tell me what causes this slime near the water column? It grows on top of the water return and creates a film on the water surface in that area. My nitrates have been a problem, around 20 but have got them down to around 10. I do 20% WC weekly. Sent from my iPad using Aquarium Advice

I would love to start a thread with photos only...no comments (it's a challenge) as sometimes you get lost in lengthy threads with banter when all you really want to do is admire and get inspiration from other's tanks. I will post mine when then lights come on. Looking forward to seeing so much...

Hi all.....I went to my local LFS and really like how high and dense the LR was. I changed my tank today after buying more established LR but on another site, someone is saying it's no good..will trap detritus. Is my tank that bad? So disappointed now. I really wanted a full reef look with a lot...

I was very fortunate and had a spotted and green for about 12mths both eating pellets til my tank crashed and I lost them both. My new green is being fed lobster eggs and although I can see him picking and eating, he is losing weight as he was quite fat when I bought him. The cubes of frozen...

I only cleaned out my sump a few weeks back and it was as clean as the return chamber which is my focus area for maintenance when I open the cupboard. Tonight I found what looks to be a back limpet in my return chamber and I have no idea how it could have got in there. I have never seen one in...

Two days ago I noticed my clown I have had for over 2yrs had his gill open on one side, his eye was cloudy (this has mostly cleared) and now it looks like the area is ulcerated. He is swimming fine and is eating like normal. Does anyone know what it is? my nitrates are high at 20 -did a water...

I bought some corals and fish privately yesterday. Really wanted the large elegance but an anemone had attached itself to its side and has stung the coral in the middle. I took the coral but had a bad experience with an anemone in the past and would like to sell it ASAP. How do I detach it if...

Just realised I have 1/2 snapped another wavemaker while cleaning my tank. Is this glue safe to use with reef? I read about some people using superglue for corals and others debate. I have attached a pic with the details. Thanks Sent from my iPad using Aquarium Advice

It's not exactly a spot, it's long in shape on the dorsal fin.The fish is very active and eats well. I've had him for a couple of months and mentioned to the LFS that he had a tiny white spot on his fin which showed after I bought him but then it disappeared. I came back from holidays and it's...

I have a friend who pulled down his tank and he has offered me some rock however it looks bleached. I am thinking about taking some and using it as base rock so I can build up my tank like the LFS. Will it eventually change and match my LR with coralline? Also will it upset the params of my...

Both of my leathers are not doing well. I bought them about 3-4wks ago. The pink one was worse so I moved it to my more established tank a couple of days back but it's starting to fall apart. The water params are all in check. It's now placed at the bottom of the tank, low current and T5...

Hi does anyone know what the name of this guy is? Thanks Sent from my iPad using Aquarium Advice

When I returned my blasto rock with a bobbit worm in it, I asked the LFS if this coral was difficult to look after and she replied that it 'just needed good lighting'. I have it positioned at the top of my tank with T5s and have been trying to find out what it is so I know whether I need to be...

This fellow just started showing itself within a new coral and is extremely fast retracting. It is between the blasto and morphs. It appears to have thorn like protrusions just below its head and is tubular in shape. Pretty sure it had banding as well and antennae. Need to make sure it's not...

I am about to do a swap with another guy on chillers. He has a HAILEA WATER CHILLER HC-1000A 1 hp and downsized to a 2ft cube. I have the same size tank but also have a 400litre (105 US gals) tank. He is willing to swap my 2nd hand Resun CL280 for it which didn't cost me anything (I bought a...

Does this attack corella morphs? I moved my hammer which stopped opening to the other side of my tank where the others were thriving and within a day, noticed my LR which was near my other hammer and was full of corella morphs had no more left, they had dropped off or were brown mush. Now my...

Was surprised to see this big guy on my wall when I turned the lights on. He camouflages well -looks like a morph which has me wondering if it's a nudibranch? He's got a broken antennae. Sent from my iPad using Aquarium Advice

I have an API test kit I bought when I was going to treat a fish in the hospital tank with copper but went with hyposalinity-and it died. I haven't used the test kit for my DT. Is copper something you would normally test for in a reef tank or should I take it back to the LFS ? It's becoming...

Hi can someone please ID these before I add them back to my tank? I also came across 3bristle stars, an acropora crab and some other starfish which are all meant to be reef safe. Thanks Sent from my iPad using Aquarium Advice

I bought a cheap 60gal (230litre) - close to being a cube shape as I could picture an amazing reef with the height of the glass however there is no room for a sump. If I buy around 10- 20kgs of live rock and buy a hob skimmer and do regular wcs, will this be enough filtration to support a reef...

I bought a new Aquareef 400 and it came with 4 x 54w T5s as standard. Prior to that I had the same model but a 300 litre which the previous owner upgraded with LEDS.My hammers, morphs, ricordeas,scolys, frogspawn and elegance all look to be doing well but my leathers aren't with one bleached...

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If I remove my new heater out of the QT which I tried hyposalinity and it is dry for a certain period, am I able to use it within a short period to heat my RODI and SW for wc for my DT?? Or do I have to keep running the QT which is now fallow for 6-8wks to ensure the ich is killed and not...

I came home tonight to see this white trail on the back of my tank wall. There was something similar about 4weeks on another wall. It looks like 1000s of tiny eggs. Any ideas? Would they be fish eggs or something nasty trying to multiply? Sent from my iPad using Aquarium Advice

Hi I noticed this initially as a white round 'blob' but it has now opened up with tubes and there are more around on other rocks. Is this a sponge? Sent from my iPad using Aquarium Advice