diff --git a/src/Miningcore/Api/Controllers/PoolApiController.cs b/src/Miningcore/Api/Controllers/PoolApiController.cs
index ff09cfe5c..d84de8f7e 100644
--- a/src/Miningcore/Api/Controllers/PoolApiController.cs
+++ b/src/Miningcore/Api/Controllers/PoolApiController.cs
@@ -1,5 +1,10 @@
+using System.Collections.Concurrent;
+using System.Data;
+using System.Globalization;
+using System.Net;
 using Autofac;
 using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.ActionConstraints;
 using Microsoft.AspNetCore.Mvc.Infrastructure;
 using Miningcore.Api.Extensions;
 using Miningcore.Api.Responses;
@@ -11,11 +16,6 @@
 using Miningcore.Persistence.Model.Projections;
 using Miningcore.Persistence.Repositories;
 using Miningcore.Time;
-using System.Collections.Concurrent;
-using System.Data;
-using System.Globalization;
-using System.Net;
-using Microsoft.AspNetCore.Mvc.ActionConstraints;
 using NLog;
 
 namespace Miningcore.Api.Controllers;
@@ -50,7 +50,7 @@ public PoolApiController(IComponentContext ctx, IActionDescriptorCollectionProvi
     #region Actions
 
     [HttpGet]
-    public async Task<GetPoolsResponse> Get(CancellationToken ct, [FromQuery] uint? topMinersRange)
+    public async Task<GetPoolsResponse> Get(CancellationToken ct, [FromQuery] uint topMinersRange = 24)
     {
         var response = new GetPoolsResponse
         {
@@ -75,10 +75,11 @@ public async Task<GetPoolsResponse> Get(CancellationToken ct, [FromQuery] uint?
                 {
                     var startTime = lastBlockTime.Value;
                     var poolEffort = await cf.Run(con => shareRepo.GetEffortBetweenCreatedAsync(con, config.Id, pool.ShareMultiplier, startTime, clock.Now));
-                    result.PoolEffort = poolEffort.Value;
+                    if(poolEffort.HasValue)
+                        result.PoolEffort = poolEffort.Value;
                 }
 
-                var from = topMinersRange.HasValue ? clock.Now.AddHours(-topMinersRange.Value) : clock.Now;
+                var from = clock.Now.AddHours(-topMinersRange);
 
                 var minersByHashrate = await cf.Run(con => statsRepo.PagePoolMinersByHashrateAsync(con, config.Id, from, 0, 15, ct));
 
@@ -141,9 +142,10 @@ public async Task<GetPoolResponse> GetPoolInfoAsync(string poolId, CancellationT
 
         if(lastBlockTime.HasValue)
         {
-            DateTime startTime = lastBlockTime.Value;
+            var startTime = lastBlockTime.Value;
             var poolEffort = await cf.Run(con => shareRepo.GetEffortBetweenCreatedAsync(con, pool.Id, poolInstance.ShareMultiplier, startTime, clock.Now));
-            response.Pool.PoolEffort = poolEffort.Value;
+            if(poolEffort.HasValue)
+                response.Pool.PoolEffort = poolEffort.Value;
         }
 
         var from = clock.Now.AddHours(-topMinersRange);
@@ -587,7 +589,7 @@ public async Task<PagedResultResponse<AmountByDate[]>> PageMinerEarningsByDayV2A
         if(pool.Template.Family == CoinFamily.Ethereum)
             address = address.ToLower();
 
-        var result = await cf.Run(con=> minerRepo.GetSettingsAsync(con, null, pool.Id, address));
+        var result = await cf.Run(con => minerRepo.GetSettingsAsync(con, null, pool.Id, address));
 
         if(result == null)
             throw new ApiException("No settings found", HttpStatusCode.NotFound);
@@ -614,14 +616,14 @@ public async Task<PagedResultResponse<AmountByDate[]>> PageMinerEarningsByDayV2A
             throw new ApiException("Invalid IP address", HttpStatusCode.BadRequest);
 
         // fetch recent IPs
-        var ips = await cf.Run(con=> shareRepo.GetRecentyUsedIpAddressesAsync(con, null, poolId, address, ct));
+        var ips = await cf.Run(con => shareRepo.GetRecentyUsedIpAddressesAsync(con, null, poolId, address, ct));
 
         // any known ips?
         if(ips == null || ips.Length == 0)
             throw new ApiException("Address not recently used for mining", HttpStatusCode.NotFound);
 
         // match?
-        if(!ips.Any(x=> IPAddress.TryParse(x, out var ipAddress) && ipAddress.IsEqual(requestIp)))
+        if(!ips.Any(x => IPAddress.TryParse(x, out var ipAddress) && ipAddress.IsEqual(requestIp)))
             throw new ApiException("None of the recently used IP addresses matches the request", HttpStatusCode.Forbidden);
 
         // map settings
@@ -639,7 +641,7 @@ public async Task<PagedResultResponse<AmountByDate[]>> PageMinerEarningsByDayV2A
         {
             await minerRepo.UpdateSettingsAsync(con, tx, mapped);
 
-            logger.Info(()=> $"Updated settings for pool {pool.Id}, miner {address}");
+            logger.Info(() => $"Updated settings for pool {pool.Id}, miner {address}");
 
             var result = await minerRepo.GetSettingsAsync(con, tx, mapped.PoolId, mapped.Address);
             return mapper.Map<Responses.MinerSettings>(result);