Hi, I had been paying a pool technician previously but I wasn't able to learn anything and it was very expensive, hence going DiY route, .

For this season, i have done the following:

1) I have brushed the pool floor, skimmed the surface and removed larger debris.
2) Added Pool Shock - over 2.5 lbs already, algaecide, clarifier.
3) Ran the sand filter on backwash for couple of mins, then rinsed briefly and placed on filter. This is where I run into issues. The filter mode doesnt seem to work.
4) As I run into pressure issues , i have been manually moving the flow of water at the surface using the pool brush/net.

Issues
1) Once placed on Filter, Pressure in the sand filter drops, so does in the return jets. I keep clearing the skimmer basket sock for gunk, pine needles and smaller debris. Yet after that this happens in a short while. I have been placing the sand filter on recirculate, which bypasses the sand filter, i am not sure if I should be doing it for that long.
2) The Main Drain has not had started yet i think , cause I havent seen bubbles popping up from it as yet.
3) There are 4 return jets in my pool, 2 by the steps , 1 in the deep and 1 on the opposite side to the steps. The one on the opposite side to the steps has barely any pressure in it.
4) My deep end and shallow end return jets have air bubbles at times once the pump is on.
5) My Heater - A Raypack Gas Heater, shows "No Demand" is this also causing any potential issues?
6) I think due to the lack of circulation of water on filter mode, my water is still cloudy. I ran the AcuCheck test last night and most of the parameters were in the "Ok" range. I think the hardness might have been slightly higher.

I will upload images here with for your reference.

Sorry if this is not the right category or group thread to be posting under.

Thanks for all your help!

Good morning - we have opened our pool after being covered since Oct last year. Nothing was done for those 5-6months.

5+ yr old - 36,000 gallon - in ground concrete pool - marcite finish.

Pulling cover off days ago and found water crystal clear with complete vibrant green algae covering bottom of pool and walls.

Scrub - vacuum - repeat and repeat - have added 28gallons of LC per local pool supply over two days. Green is gone but water is very cloudy blue now. Can’t see bottom.

Water test this morning gave these numbers

TC 9ppm - FC 9ppm - PH 6 drops - Base demand 0 - TA 125ppm - Calcium Hardness 150ppm - Stabilizer 300 ppm - Total solids 1000ppm.

75 degree water temp.

Pool supply now calls for 4 qts of Metal Control - 1 gallon Muratic - 20lbs Hardness increased - 1.5qts of Clarifier.

Sounded more about $$ than helping me clear up quickly. 5+ tread I’ve never put that much into it …but have never let it get that bad either.

Just looking for advice.
I appreciate this site!

Thank you
John

After a few months of not taking care of my pool (I know I know..) I'm now paying the price. Most (99%) of the algae cleaned up after the SLAM and some brushing but some small pieces remain. It definately looks like green algae, idential the what was there before the SLAM.

Question now is, do I SLAM again or try a spot treatment? I read about a chlorine puck in a sock but not so sure.

Levels today (TF-Pro Salt kit):

FC - 5
CC - 0
pH - 7.4 (dropped it to 7.2 yesterday to tackke high TA)
TA - 70
CYA -45 (I normally keep this a little higher, 60/70, but am working my way back there slowly)
CH - 350 (Getting it to 450 at the minute is the plan)
Salt - 3600

Plaster Pool, Autopilot ColorSync Gen II SWG.

PoolMath is telling me to add 216oz liquid chlorine to SLAM (18) based on my current CYA.

My wife and I decided that we love our pool area so much it was time for a refresh. Pool was built early to mid 1980's Timber construction was discovered upon concrete being removed. Wood is rotting in some areas and will need replacing, I have talked to a local pool place and they are slammed busy with about 10 other pools of our vintage to repair. He stated to me that the repair isn't too bad and if a person is relatively handy it can be done on our own. Looks like I may need to replace a few 4x4's and a bunch of 2x4's. Has anyone else taken on a DIY like this? How did it go? what do I need to be aware of?